Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Michalski, J. 1957a. Mozliwosc wystepowania Scolytus (Scolytochelus) ensifer Eichh (Coleoptera, Scolytidae) w wielkopolsce [Possible occurrence of S ensifer in Wielkopolska] . Roczniki wyzszej szkoly roiniczej w posnaniu 1:73-77.