File:Higashi, S. 1983. Polygyny and nuptial flight of Formica yessensis.pdf

Summary
Higashi, S. 1983. Polygyny and nuptial flight of Formica (Formica) yessensis Forel at Ishikari Coast, Hokkaido, Japan. Insectes Sociaux 3): 287-297 (doi:10.1007/BF02223986).