Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Shishov, K. M. 1931a. Analyse der Borkenkafer Probebaume. Forsttechnische Akademie, Ento-phytopath. Abt. des wissensch. Forstwissensch. Zirkels. Leningrad 1931:103-114.