Fettig, C.J., McKelvey, S.R., and Huber, D.P.W. 2005. Nonhost angiosperm volatiles and verbenone disrupt response of western pine beetle, Dendroctonus brevicomis (Coleoptera: Scolytidae), to attractant-baited traps. Journal of Economic Entomology 98:2041 – 2048. LINK