Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Gorjaceva, V. I., and G. I. Andreeva. 1961. Himiceskaya bor'ba s koroedami tipografom dvojnikom na mestah ih zimovka [Chemical control of Ips typographus and I. duplicatus in their overwintering grounds]. Lesn. Z., Arhangel 4: 162-164.