- Oester, P. T., and J. A. Rudinsky. 1979. Acoustic behavior of three sympatric species of Ips (Coleoptera: Scolytidae) co-inhabitating Sitka spruce. Zeitschrift fuer Angewandte Entomologie 87:421-427.
- Oester, P. T. 1976. Sound production in Scolytidae: stridulation by "silent" bark beetles [Abstract] . Oregon Entomological Society, Bulletin 59:484.
- Oester, P. T. 1977. Sound production in three sympatric Ips (Coleoptera: Scolytidae) species co-inhabiting sitka spruce (Picea sitchensis). Unpublished thesis, Oregon State University, Corvallis.
- Oester, P. T., and J. A. Rudinsky. 1975. Sound production in Scolytidae: stridulation by "silent" Ips bark beetles . Zeitschrift fur Angewandte Entomologie 79:421-427.
- Oester, P. T., J. A. Rudinsky, and L. C. Ryker. 1981. Olfactory and acoustic behavior of Pseudohylesinus nebulosus (Coleoptera: Scolytidae) on Douglas fir bark . Canadian Entomologist 113:645-650.
- Oester, P. T., L. C. Ryker, and J. A. Rudinsky. 1978. Complex male premating stridulation of the bark beetle Hylurgops rufipennis (Mann) . Coleopterists' Bulletin 32:93-98.
- Rudinsky, J. A., P. T. Oester, and L. C. Ryker. 1978. Gallery initation and male stridulation of the polygamous spruce bark beetle Polygraphus rufipennis . Entomological Society of America, Annals 71:317-321.
- Ryker, L. C., and P. T. Oester. 1982. Pseudohylesinus nebulosus (LeConte) (Col, Scolytidae): aggregation by primary attraction . Zeitschrift fur Angewandte Entomologie 94:377-382.