Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Grygier, P., and J. Michalski. 1977. Observations on the emergence and sex ratio of some parasites of Scolytus sp. (Col., Scolytidae) under natural conditions. Societe des Amis des Science et des Lettres de Poznan, Bulletin (D) 17: 209-220.