Structure determination of KLaS<sub>2</sub>, KPrS<sub>2</sub>, KEuS<sub>2</sub>, KGdS<sub>2</sub>, KLuS<sub>2</sub>, KYS<sub>2</sub>, RbYS<sub>2</sub>, NaLaS<sub>2</sub>and crystal-chemical analysis of the group 1 and thallium(I) rare-earth sulfide series
Distribution of the number of citations over years.