About
Technology
Issues
FAQ
Search
Rankings
Journals
Disciplines
Institutions
Schools/Departments
Field Rankings
Scientometrics
★★(★)
Articles
h
-index
g
-index
Journals
Co-Authors
Publications (by citations)
Publications (by year)
Citation Distribution
Citing Bodies
Top Citing Authors
Top Citing Institutions
Top Citing Schools
Top Citing Journals
Top Citing Disciplines
exaly
›
Authors
›
Simon Billinge
›
top-authors
Simon Billinge
Brockhouse Institute for Materials Research
223
(top 1%)
papers
18.2K
(top 1%)
citations
66
(top 1%)
h
-index
131
(top 1%)
g
-index
241
all documents
18.8K
doc citations
1.2K
citing journals
105
times ranked
Top Authors (by citations)
#
Author
Articles
Citations
R ARank
R CRank
2
Pavol Juhas
28
3,104
1
1
3
Thomas Proffen
11
2,774
4
1
4
E S Bozin
34
2,686
1
1
5
Yury Gogotsi
6
1,523
117
115
6
Maxwell W Terban
20
1,281
1
1
7
Chenyang Shi
8
1,091
1
1
8
Chuanfang Zhang
5
1,042
91
170
9
Xiaohao Yang
10
1,034
1
1
10
Emil S Bozin
10
943
2
1
11
Michel Barsoum
2
875
102
64
12
Kirsten Marie Ørnsbjerg Jensen
15
873
3
3
13
Jonathan S Owen
7
799
2
15
14
Steven J May
3
788
21
22
15
Xiangyun Qiu
4
737
4
1
16
Babak Anasori
2
721
67
90
17
Christopher L Farrow
8
697
1
1
18
Thomas Vogt
3
643
27
6
19
Michael Naguib
2
642
49
42
20
Igor Levin
1
614
18
1
21
Long Yang
9
583
1
1
22
Clare Grey
2
560
228
94
23
Daniel G Nocera
3
549
51
48
24
Bo Brummerstedt Iversen
7
498
51
38
25
Mercouri G Kanatzidis
6
490
124
235
26
Patrick Urbankowski
3
487
9
21
27
Christos D Malliakas
5
470
26
29
28
Mogens Christensen
6
448
11
16
29
Espen D Bøjesen
5
430
7
5
30
Alexander N Beecher
3
415
2
2
31
Pantelis N Trikalitis
1
406
34
18
32
Paul R C Kent
1
394
123
60
32
Eun Ju Moon
1
394
22
14
32
Kanit Hantanasirisakul
2
394
18
34
32
Yu Xie
1
394
63
70
36
Nina Lock
4
389
8
9
37
Nicola A Spaldin
3
374
26
69
38
Brandi Cossairt
3
369
12
5
39
Benjamin A Frandsen
11
360
3
3
40
Peter F Peterson
2
358
9
8
41
Brian L Decost
2
350
9
11
42
Hyunjeong Kim
6
343
5
3
43
Petros Souvatzis
1
308
3
1
44
Joshua J Choi
2
303
20
23
45
J f Mitchell
6
272
13
30
46
Antonio Cervellino
2
271
41
27
47
Genda Gu
4
267
66
85
47
John M Tranquada
4
267
34
32
49
Antonietta Guagliardi
1
246
64
35
49
Norberto Masciocchi
1
246
137
58
49
Federica Bertolotti
1
246
32
13
49
Maksym Kovalenko
1
246
275
236
49
Sergii V Yakunin
1
246
68
57
49
Songsheng Tao
7
246
1
1
49
Jan Skov Pedersen
1
246
165
50
49
Loredana Protesescu
1
246
52
44
58
Zurab Guguchia
5
245
26
41
58
Rustem Khasanov
5
245
41
40
58
Elvezio Morenzoni
5
245
23
29
62
Ruidan Zhong
3
237
40
32
63
Yimei Zhu
8
234
36
93
64
Chris Wolverton
2
227
140
123
65
Cedomir Petrovic
6
226
31
29
66
P M Duxbury
4
224
2
2
67
Aron Walsh
1
221
264
307
67
Ahmet Alataş
1
221
77
2
67
Jonathan M Skelton
1
221
89
39
67
Yasutomo Uemura
4
221
18
34
67
Haowei Zhai
1
221
25
20
67
Mark Van Schilfgaarde
1
221
46
52
67
Jarvist M Frost
1
221
49
55
74
Eric Stach
2
220
189
230
75
Soham Banerjee
11
217
1
1
76
A M Milinda Abeykoon
7
211
2
2
77
Alex Amato
4
209
54
59
77
John A Schneeloch
2
209
52
45
79
Shyue Ping Ong
1
207
107
109
79
Anubhav Jain
1
207
76
114
79
Chi Chen
1
207
34
29
79
Kamal Choudhary
1
207
42
23
79
Ankit Agrawal
1
207
31
19
79
Francesca Tavazza
1
207
21
18
79
Ryan Cohn
1
207
2
2
79
Cheol Woo Park
1
207
2
2
79
Elizabeth A Holm
1
207
24
11
79
Alok Choudhary
1
207
25
15
89
Tonica Valla
1
206
52
31
89
J C Séamus Davis
1
206
34
22
89
Chung Koo Kim
1
206
14
13
93
Alexander D Shengelaya
3
203
14
10
94
Christopher J Ackerson
2
201
12
16
94
Marcus A Tofanelli
2
201
2
2
96
Abhay Pasupathy
3
199
51
102
97
Hubertus Luetkens
2
193
103
55
97
Christopher Baines
2
193
41
22
99
Daniel Kwabena Bediako
2
190
11
27
99
D Kwabena Bediako
2
190
10
26
101
Jianwei Miao
2
186
51
61
102
Peter A Ercius
1
181
180
87
103
Chia-Hao Liu
11
179
1
1
104
Christine L Heinecke
1
167
3
5
105
Hidenori Takagi
2
161
180
172
105
Majid Beidaghi
1
161
40
63
105
Olha Mashtalir
1
161
10
21
108
Xu Xiao
2
160
36
113
108
Hao Wang
2
160
22
60
108
Yao Yang
2
160
31
55
111
Alastair J Florence
2
150
33
21
112
Joseph H Montoya
1
143
45
73
112
A Gilad Kusne
1
143
17
49
112
Joshua Schrier
1
143
34
21
112
Keith A Brown
1
143
65
37
112
Chiwoo Park
1
143
29
26
112
John Gregoire
1
143
80
80
112
Benji Maruyama
1
143
44
114
112
Eli Rotenberg
1
143
221
155
112
Carla P Gomes
1
143
44
39
112
Kristofer G Reyes
1
143
17
14
112
Apurva Mehta
1
143
101
99
112
Semion K Saikin
1
143
40
31
112
Ian Foster
1
143
143
139
112
Tonio Buonassisi
1
143
142
155
112
Elsa A Olivetti
1
143
43
41
128
Wei-Guo Yin
6
140
8
16
129
Robert J Koch
6
131
3
2
130
Stanislaus S Wong
3
122
28
49
130
Simon A J Kimber
2
122
21
54
132
Ann-Christin Dippel
3
118
12
11
133
Gregory S Day
2
113
20
19
133
Hong-Cai Zhou
2
113
174
295
133
Henry C Foley
2
113
5
7
136
Gabriel Kotliar
2
109
60
56
137
He-Chang Lei
2
103
109
159
138
Robert Cava
1
101
257
263
138
Christopher B Murray
3
101
68
178
140
Andrew M Beale
1
96
95
75
140
Robert Cernik
1
96
34
15
140
Simon D M Jacques
1
96
37
24
143
Martin U Schmidt
3
94
8
14
144
Xiaodong Zou
1
93
141
190
144
Sue-Lein Wang
1
93
17
14
144
Kun-Yu Wang
1
93
40
38
144
Liang Feng
1
93
56
68
144
Chia-Her Lin
1
93
76
43
144
G X Wang
1
93
235
306
144
Sheng-Han Lo
1
93
9
8
144
Zhehao Huang
1
93
58
89
144
Kui Tan
1
93
58
73
144
Kuang-Lieh Lu
1
93
61
41
144
Linfan Cui
1
93
8
9
144
Valeri Petkov
1
93
61
83
144
Yves Chabal
1
93
146
187
144
Weizhai Bao
1
93
24
27
144
Henrik Lyder Andersen
2
93
15
9
144
Chun-Chuen Yang
1
93
34
18
144
Shuai Yuan
1
93
81
110
144
Kathleen Maleski
1
93
51
107
163
Declan Scullion
1
92
21
49
163
James C Hone
1
92
375
501
163
Frank Bridges
1
92
32
15
163
D Edelberg
1
92
1
1
167
Matt G Tucker
5
90
20
86
168
K W Chapman
6
88
26
187
168
Daniel O'Nolan
6
88
6
34
170
James Neilson
6
85
8
37
171
Jarad A Mason
2
81
25
101
171
Crystal S Lewis
2
81
4
8
171
Jonathan P Mathews
1
81
33
39
174
Donald L Sparks
1
79
13
25
174
Xiaoming Wang
1
79
51
36
174
Paul Northrup
1
79
12
25
174
Mengqiang Zhu
1
79
49
32
178
Kenneth Shankland
1
78
32
45
179
Cheng Zhang
1
77
83
84
179
Jinkyu Han
1
77
19
7
179
Pablo Munayco
1
77
8
3
182
Serena A. Corr
3
76
15
79
183
Jennifer D Lee
2
75
17
44
184
Xiaoyu Deng
1
73
24
31
184
Lijun Wu
3
73
44
152
186
James R Mcbride
1
71
53
71
186
Ahmad S Masadeh
1
71
1
5
188
Anders B Blichfeld
2
68
17
19
188
David C Johnson
2
68
37
30
188
Sage R Bauers
2
68
18
33
188
Suzannah R Wood
2
68
7
5
192
Xiaosong Li
1
67
110
106
192
Sarah H Tolbert
1
67
96
118
192
Héctor Abruña
1
67
144
203
192
Jennifer L Stein
1
67
6
10
192
Alessio Petrone
1
67
24
23
192
Chi Chen
1
67
12
24
198
Changqing Jin
2
66
107
149
198
Carlile C Lavor
2
66
15
13
198
Douglas Soares Gonçalves
2
66
5
3
198
Bijuan Chen
2
66
14
9
198
Antonio Mucherino
2
66
8
9
203
Allison Wustrow
5
65
2
3
204
Theo Siegrist
1
61
110
135
204
Paul K Todd
3
61
2
2
204
Asel Sartbaeva
1
61
23
10
204
Karena W Chapman
3
61
28
179
204
Rongwei Hu
1
61
26
27
209
Stephen P Obrien
2
60
46
80
209
Adam H Slavney
1
60
11
19
209
Miguel I Gonzalez
1
60
43
82
212
Gia Thinh Tran
4
59
1
1
213
Anatoly Frenkel
1
58
249
284
213
Jin Cheng Zheng
1
58
85
106
213
Graeme Luke
2
58
70
116
216
Zihua Zhu
1
56
138
184
216
Praveen K Thallapally
1
56
94
147
216
Qiang Du
2
56
28
35
216
Bharat K Medasani
1
56
17
19
216
Benjamin A Legg
1
56
27
35
216
Maria L Sushko
1
56
64
85
216
Sanjit Ghose
1
56
11
15
223
Matthew Stone
1
55
198
194
223
Mark D Lumsden
1
55
116
138
225
Wolfgang G Zeier
1
50
81
167
225
Marco Di Michiel
1
50
16
33
225
Brent C Melot
1
50
70
103
225
G. Jeffrey Snyder
2
50
191
508
229
Colin P Nuckolls
2
49
100
207
229
Michael L Steigerwald
2
49
53
113
231
Daniel Hsu
1
47
6
9
231
Yunzhe Tao
1
47
3
2
233
David E Cliffel
1
46
35
47
233
Takeshi Egami
1
46
131
210
233
Carrie A Simpson
1
46
7
11
233
Mouath Shatnawi
1
46
1
1
237
Antonio Diego Lozano-Gorrín
1
44
18
11
237
Marcos Dantus
1
44
50
52
239
Arkadiy Simonov
1
43
8
12
239
Thomas Weber
1
43
11
18
241
K V Lakshmi
1
41
34
39
241
Matthias Epple
1
41
150
207
241
Haiqing Liu
1
41
15
19
241
Anton Kovyakh
1
41
1
1
241
Dipankar Saha
1
41
19
11
241
Christopher Koenigsmann
1
41
23
30
241
Julia Oktawiec
1
41
54
53
241
Jaruwan Amtawong
1
41
8
3
241
James P Dombrowski
1
41
4
3
241
T Don Tilley
1
41
59
75
241
Micah S Ziegler
1
41
16
26
241
Walter S Drisdell
1
41
62
92
241
Michal Bajdich
1
41
65
175
241
Steinar Birgisson
1
41
7
7
241
Martin Bremholm
1
41
64
86
241
Andy I Nguyen
1
41
13
30
241
Kurt M Van Allsburg
1
41
16
36
258
Brennan C Mcbride
3
40
1
1
258
Matthew J Mcdermott
3
40
4
10
258
Matthew W Greenberg
2
40
5
3
258
Shyam S Dwaraknath
3
40
12
82
258
Kristin A Persson
3
40
75
451
263
Yew San Hor
2
39
24
68
263
Cyrille Costentin
1
39
24
26
265
José Antonio Alonso
1
36
148
172
265
Alexander Zunger
2
36
57
126
265
Xin-Gang Zhao
2
36
13
43
265
Fanlong Ning
1
36
30
47
265
Alannah Hallas
1
36
41
32
265
Yipeng Cai
1
36
20
17
265
Shoya Sakamoto
1
36
47
26
265
Hiroshi Kageyama
1
36
85
83
265
Masatoshi Imada
1
36
33
55
265
Elmar Pöselt
1
36
11
8
265
Takashi U Ito
1
36
53
36
265
Murray N Wilson
1
36
57
46
265
Atsushi Fujimori
1
36
169
151
265
Taito Murakami
1
36
23
28
279
Yue Gao
1
35
35
43
279
Jeremy L Hitt
1
35
11
44
279
Lia Krusin-Elbaum
1
35
12
29
279
Jonathan E Spanier
1
35
48
60
279
M-G Han
1
35
64
97
279
Jackie Li
1
35
12
29
279
Shuangyi Liu
1
35
12
6
279
Yuguang C Li
1
35
65
142
279
Andrew Akbashev
1
35
17
75
279
Limin Huang
1
35
58
69
279
Zhifei Yan
1
35
13
62
279
Thomas E Mallouk
1
35
140
311
279
Stephen O'brien
1
35
48
61
279
Alexander Couzis
1
35
8
14
279
Xiaohua Liu
1
35
7
7
294
Raúl Hernández Sánchez
1
34
26
35
294
Yu Zhong
1
34
34
64
294
Runze Yu
2
34
26
82
294
Julie B Staunton
1
34
39
45
294
Melissa L Ball
1
34
13
16
294
Katharine L Page
1
34
107
221
294
Daniel Paley
1
34
13
19
301
Guanglong Huang
2
33
9
4
301
Katsuyo Thornton
2
33
43
157
303
Zizhou Gong
2
32
5
18
304
Gabriel M Veith
2
31
104
298
304
Rebecca D Mcauliffe
2
31
7
19
306
Abraham Clearfield
1
30
59
98
306
Mikhail Feygenson
1
30
66
180
306
Alexei M Tsvelik
2
30
20
72
306
Rita Silbernagel
1
30
2
2
310
Ran Gu
2
29
3
2
310
Lambert van Eijck
1
29
30
48
310
Robert Dinnebier
3
29
47
225
313
Brian P Setzler
1
28
15
25
313
Thomas F Fuller
1
28
25
48
315
Yue Cao
2
27
24
59
315
Tadesse A Assefa
2
27
27
79
315
Ian K Robinson
2
27
70
163
318
Zhi Wang
1
26
9
18
318
Heather J Kulik
1
26
51
110
318
Gang Wu
1
26
27
72
318
Jonathan De Roo
2
26
22
108
318
Marcel B Miglierini
1
26
54
36
318
Danielle Reifsnyder Hickey
1
26
30
41
318
Christopher C Cummins
1
26
65
108
318
Pierre Kennepohl
1
26
59
47
318
Benjamin T Diroll
1
26
89
140
318
Vicky V T Doan-Nguyen
1
26
33
92
318
Wesley J Transue
1
26
20
37
318
Matthew Nava
1
26
22
38
331
Nasim Farahmand
1
25
13
13
331
Zheng Gai
1
25
111
200
331
Paolo Scardi
1
25
91
99
331
Julien Lombardi
1
25
6
10
331
Frederick A Pearsall
1
25
6
10
331
Reinhard B Neder
1
25
16
25
337
Tatiana E Gorelik
1
24
23
41
337
Ute Kolb
1
24
120
209
339
Klaartje De Buysser
2
23
22
54
339
Emil Thyge Skaaning Kjær
1
23
15
11
339
Hannu Huhtinen
2
23
20
43
339
Hannes Rijckaert
2
23
28
67
339
Petriina Paturi
2
23
41
66
339
Reza Shahbazian-Yassar
1
23
183
378
339
Xavier Roy
2
23
61
184
339
Mark T Swihart
1
23
125
194
339
Soroosh Sharifi-Asl
1
23
37
87
339
Mohammad Malekzadeh
1
23
5
6
339
D Mihailovic
1
23
85
118
339
Parham Rohani
1
23
4
9
351
Helen Playford
1
22
37
110
351
Vladimir A Blagojević
1
22
19
15
351
Nathan Nakamura
2
22
8
11
351
Peter J Baker
1
22
75
210
351
Beth I J Johnston
1
22
8
44
351
Gary Paterson
1
22
35
40
351
B Reeja-Jayan
2
22
12
24
351
Ashfia Huq
1
22
125
241
351
Adam A Aczel
1
22
130
153
351
Baby Reeja Jayan
2
22
9
13
361
Hyunjung Kim
1
21
86
177
361
Jaeku Park
1
21
54
95
361
Amir Mazaheripour
1
21
17
13
361
Sae Hwan Chun
1
21
99
114
361
Changyong Song
1
21
98
186
361
Intae Eom
1
21
85
107
361
Hyo Jung Hyun
1
21
18
48
361
Daewoog Nam
1
21
81
137
361
Xiaogang Peng
1
21
56
105
361
Hong Ki Kim
1
21
4
15
361
Sangsoo Kim
1
21
40
72
361
Jae Hyuk Lee
1
21
78
116
361
Heemin Lee
1
21
16
12
361
Ming Lu
1
21
58
97
361
Sungwon Kim
1
21
11
15
377
Isabel Van Driessche
1
20
30
58
377
Matthias Van Zele
1
20
5
5
377
Michelle Beauvais
1
20
3
3
377
Hongyao Xie
1
20
39
70
377
Vladimir I Bakhmutov
1
20
14
26
377
Zhi Li
1
20
23
50
377
Aída Contreras Ramírez
1
20
5
4
377
James Male
1
20
10
35
385
Gabrielle E Kamm
1
19
7
8
385
Antonin Grenier
1
19
16
52
385
Brian H Toby
1
19
36
99
385
David Montiel
1
19
10
6
389
Mads R V Jørgensen
1
18
45
56
389
Abdeljalil Assoud
1
18
38
49
389
Shahab Derakhshan
1
18
13
23
389
Haraldur Gunnlaugsson
1
18
27
37
389
Enkhtsetseg Dashjav
1
18
20
32
394
Robert G Gambee
1
17
3
3
394
James A Kaduk
1
17
18
17
394
D Chateigner
1
17
75
136
394
Stephanie L Brock
1
17
32
54
394
Luca Lutterotti
1
17
39
71
394
Matteo Leoni
1
17
37
109
394
Yanhua Zhang
1
17
9
15
394
Todd C Monson
1
17
16
35
394
Ambesh Dixit
1
17
54
74
394
Richard C Haskell
1
17
3
5
394
Nathaniel Henderson
1
17
1
1
405
Jake C Russell
1
15
15
64
405
David A Egger
1
15
143
349
405
Gøran Jan Nilsen
1
15
20
38
405
Jingjing Yang
1
15
24
68
405
Xiaoyang Zhu
1
15
169
365
405
Feifan Wang
1
15
20
42
405
Martina Lessio
1
15
8
17
405
David R Reichman
1
15
93
142
405
Andrew C Crowther
1
15
17
37
405
Samuel R Peurifoy
1
15
22
39
405
Andrew R Wildes
1
15
95
196
405
Evan A Doud
1
15
12
24
405
Alaina C Hartnett
1
15
5
4
418
Leslie S Hamachi
1
14
12
63
418
Renkai Li
1
14
98
182
418
Abraham J Jordan
1
14
4
18
418
Igor A Zaliznyak
1
14
58
99
418
Ellie Bennett
1
14
8
18
418
Xijie Wang
1
14
87
199
424
Tapan Chatterji
1
13
65
115
425
Yan Li
1
12
14
28
426
Chun-Li Wang
1
11
183
430
426
Haidong Zhou
1
11
273
471
426
Marshall T Mcdonnell
1
11
14
46
426
Kefeng Wang
1
11
32
71
426
Aifeng Wang
1
11
49
102
431
Oleg Gang
1
10
64
164
431
Rachel Narehood Austin
1
10
10
23
431
Oleksandr I Malyi
1
10
44
77
431
Ekaterina Pomjakushina
1
10
153
337
431
Brian G Frederick
1
10
10
24
431
Dmitri V Talapin
1
10
122
257
431
Katayun Barmak
1
10
71
160
431
Akbar Mahdavi-Shakib
1
10
11
19
431
Amirali Zangiabadi
1
10
43
109
440
Yanan Hao
1
9
27
51
440
Kui-Juan Jin
1
9
101
221
440
Ke Bi
1
9
40
78
440
Jiesu Wang
1
9
12
34
440
Yevgeny Rakita
1
9
19
34
445
Qian Cheng
1
8
44
96
445
Yuan Yang
1
8
124
297
447
Yang Ren
1
7
574
1.4K
447
Boby Joseph
1
7
106
200
447
Lorenzo Malavasi
1
7
111
229
450
Xiaojing Huang
1
6
85
229
450
Jette Katja Mathiesen
1
6
10
24
450
Hanfei Yan
1
6
76
180
450
Antonio M Dos Santos
1
6
67
191
450
Markus Meuwly
1
6
52
112
450
Wenjian Lu
1
6
65
114
450
Michael Devereux
1
6
14
29
450
Susan R Cooper
1
6
10
18
450
Johan Chang
1
6
117
228
450
Xiao Tong
1
6
100
221
450
Dorthe Bomholdt Ravnsbæk
1
6
49
121
450
Zachary Thatcher
1
6
1
6
450
Tadashi Adachi
1
6
39
93
450
Reinhard Boehler
1
6
38
94
450
Martin Aaskov Karlsen
1
6
2
6
450
Yu-Ping Sun
1
6
117
215
450
Dietger Van den Eynden
1
6
5
9
450
Rohan Pokratath
1
6
6
13
450
Susan Rudd Cooper
1
6
1
1
469
Chong-Yu Ruan
1
5
9
16
469
Paul Evans
1
5
95
184
471
Adam A Corrao
1
4
17
34
471
Simon M Vornholt
1
4
8
57
471
Antonio Bianconi
1
4
85
223
471
Gaetano Campi
1
4
89
177
471
Shiyu Yue
1
4
16
32
471
Chao Feng
1
4
16
25
471
Stefano Agrestini
1
4
88
222
471
Eleanor J Schofield
1
4
8
13
471
Wenhao Sun
1
4
41
138
471
Naurang L Saini
1
4
101
170
481
Jordi Espín
1
3
21
36
481
Mariarosa Moneghini
1
3
10
28
481
Inhar Imaz
1
3
89
211
481
Aurora Cruz-Cabeza
1
3
61
130
481
Martin Etter
1
3
80
275
481
Jukka Rantanen
1
3
175
336
481
Daniel Maspoch
1
3
144
293
481
Ricardo Zarzuela
1
3
14
30
481
Dritan Hasa
1
3
23
56
481
Xiaoya Shi
1
3
8
34
491
Han Wang
1
2
123
371
491
William Phelan
1
2
14
84
491
Eric Dooryhee
1
2
2
20
491
Lucas A Pressley
1
2
5
11
491
Peter G Khalifah
1
2
54
144
491
C Stephen Hellberg
1
2
9
46
491
Hai-Yan Wang
1
2
271
622
491
Noam Bernstein
1
2
26
119
491
Laisuo Su
1
2
19
37
491
Martin V Zimmermann
1
2
16
39
491
Shikhar Krishn Jha
1
2
15
29
491
Dorota Koziej
1
2
33
142
491
Sani Y Harouna-Mayer
1
2
3
12
491
Di Zhang
1
2
185
491
506
Angela Altomare
1
1
37
112
507
Christopher J Wright
1
0
2
9
site/software ©
exaly
; All materials licenced under
CC by-SA
.