| Carbon isotope fractionation in plants | Phytochemistry | 1981 | 1.6K |
| Testis weight, body weight and breeding system in primates | Nature | 1981 | 817 |
| Optimized perturbation theory | Physical Review D | 1981 | 814 |
| Tetramesityldisilene, a stable compound containing a silicon-silicon double bond | Science | 1981 | 738 |
| Cruciform structures in supercoiled DNA | Nature | 1981 | 514 |
| Are the Effects of University Teacher Education 'Washed Out' by School Experience? | Journal of Teacher Education | 1981 | 471 |
| Software Structure Metrics Based on Information Flow | IEEE Transactions on Software Engineering | 1981 | 406 |
| A new staphylococcal enterotoxin, enterotoxin F, associated with toxic-shock-syndrome Staphylococcus aureus isolates | Lancet, The | 1981 | 391 |
| Chemoselective oxidation of sulfides to sulfones with potassium hydrogen persulfate | Tetrahedron Letters | 1981 | 364 |
| Modeling Multiple Time Series with Applications | Journal of the American Statistical Association | 1981 | 319 |
| A history of the human fetal globin gene duplication | Cell | 1981 | 318 |
| The relation between age and mean length of utterance in morphemes | Journal of Speech, Language, and Hearing Research | 1981 | 305 |
| Calculating solar radiation for ecological studies | Ecological Modelling | 1981 | 290 |
| Some continuity properties of polyhedral multifunctions | Mathematical Programming Studies | 1981 | 285 |
| Internal Determinants of Export Marketing Behavior: An Empirical Investigation | Journal of Marketing Research | 1981 | 274 |
| Subduction of the Eastern Panama Basin and seismotectonics of northwestern South America | Journal of Geophysical Research | 1981 | 271 |
| The continuing coparental relationship between divorced spouses | American Journal of Orthopsychiatry | 1981 | 271 |
| Forage Fishes and Their Salmonid Predators in Lake Michigan | Transactions of the American Fisheries Society | 1981 | 266 |
| Left-handed DNA in restriction fragments and a recombinant plasmid | Nature | 1981 | 265 |
| Statistics for microfossil concentration measurements employing samples spiked with marker grains | Review of Palaeobotany and Palynology | 1981 | 258 |
| The expression of isotope effects on enzyme-catalyzed reactions | Annual Review of Biochemistry | 1981 | 252 |
| The nucleotide sequence of the cloned rpoD gene for the RNA polymerase sigma subunit from E coli K12 | Nucleic Acids Research | 1981 | 250 |
| Significance of interdune deposits and bounding surfaces in aeolian dune sands | Sedimentology | 1981 | 248 |
| Ultrasonic velocities in Cretaceous shales from the Williston basin | Geophysics | 1981 | 245 |
| The balanced placebo design: methodological considerations | Addictive Behaviors | 1981 | 245 |
