- Basham, J. T., and R. M. Belyea. 1960. Death and deterioration of balsam fir weakened by spruce budworm defoliation in Ontario. Part III. The deterioration of dead trees. Forest Science 6(1):78-96.
- Belyea, R. M. 1948. Role of beetles in the dying of defoliated balsam fir . Canada Department of Agriculture, Science Service, Division of Entomology, Forest Insect Investigations, Bi-monthly Progress Report 4:1.
- Belyea, R. M. 1950. Seasonal history notes on Pityokteines sparsus LeC . Canada Department of Agriculture, Science Service, Division of Entomology, Forest Insect Investigation, Bi-monthly Progress Report 6:2.
- Belyea, R. M. 1951. Bark and wood inhabiting insects attacking balsam fir trees severely weakened by the spruce budworm. Unpublished dissertation, University of Toronto.
- Belyea, R. M. 1952a. Death and deterioration of balsam fir weakened by spruce budworm defoliation in Ontario: I, Notes on the seasonal history and habits of insects breeding in severely weakened and dead trees . Canadian Entomologist 84:325-335.
- Belyea, R. M. 1952b. Death and deterioration of balsam fir weakened by spruce budworm defoliation in Ontario: Part II, An assessment of the role of associated insect species in the death of severely weakened trees . Journal of Forestry 50:729-738.
- Belyea, R. M., and M. L. Prebble. 1951. Mortality of white spruce. Lake Nipigon area. Canada Department of Agriculture, Science Service, Division of Forest Biology, Bi-monthly Progress Report 7(6):2.