Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Nakayama, M., K. Furuta, I. Takahashi, Y. Sato, and K. Iguti. 1991. Death of Ezo-spruce around log depots after partial cuttings and the dynamics of adult spruce beetles (In Japanese). Bulletin of the Tokyo University Forests 84:39-52.