Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Lawson, S., K. Furuta, and K. Katagiri. 1995. Effect of tree host and beetle density on reproduction and survival of Ips typographus japon-icus Niijima (Col, Scolytidae) in Hokkaido . Journal of Applied Entomology 119:383-390.