- Gope, B., and S. K. Roy. 1986. Shade tree pest survey in the Dooars. Two and a Bud 3326-27.
- Magnus, P., and G. Roy. 1978. A short synthesis of (R)-(+)-frontalin and Latia luciferin using new organosilicon reagents . Journal of the Chemical Society, Chemical Communications 1978:297-298.
- Perumanl, P. A., J. R. Purdy, and D. N. Roy. 1981. Distribution of Dursban 4E on mature elm trees sprayed by hydraulic sprayer and mist blower. Pages 466-473 in E. S. Kondo, Y. Hiratsuka, and W. B. G. Denyer (eds.), Proceedings Dutch elm disease symposium and workshop, 5-9 October 1981. Canada Department of the Environment, Canadian Forestry Service and Province of Manitoba, Department of Natural Resources. 517 p.
- Roy, P. S. 1948. L'invasion des parasites forestieres . Foret Quebecoise 13:367-369.
- Roy, Z. 1948. La maladie hollandaise de 1'orme. Rev. d'Oka 22:235-236.
- Roy, D. N., J. R. Purdy, P. A. Perumal, and J. K. Grace. 1988. Effect of application equipment on the distribution of chlorpyrifos applied for Dutch elm disease vector control . Entomological Society of Ontario, Proceedings 119:63-68.