Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Jezek, S. 1947. Pozorovani lykozrouta smrkoveho (Ips typographus) na jare 1947 [Die Beobachtung uber den Fichtenborkenkafer im Jahre 1947] . Ceskoslovensky Les 27:362-365.