- Hall, P. M., J. A. McLean, and P. A. Murtha. 1983. Dye-layer density analysis identifies new Douglas-fir beetle attacks . Canadian Journal of Forest Research 13:279-282.
- Hall, P. M., P. A. Murtha, and J. A. McLean. 1981. Remote sensing of Douglas-fir trees newly infested by bark beetles. Pages 91-98 in USA, American Society of Photogrammetry. Color aerial photography in the plant sciences and related fields. Proceedings of the Eighth Biennial Workshop on Color Aerial Photography in the Plant Sciences. 167 p.
- Murtha, P. A. 1969. Aerial photographic interpretation of forest damage: an annotated bibiliography. Canada Department of Fisheries and Forestry, Forestry Branch, Forest Management Institute, Ottawa, Ontario, Information Report FMR-X-16. 76 p.
- Murtha, P. A. 1986. Interpretation of large-scale color-IR photographs for bark beetle incipient attack detection. Pages 65-78 in P. M. Hall and T. F. Maher (eds.), Mountain pine beetle symposium proceedings, Smithers, British Columbia, 1985. British Columbia Ministry of Forests, Pest Management Report 7.
- Murtha, P. A., and R. Cozens. 1985. Color infra-red photo interpretation and ground surveys to evaluate spruce beetle attack . Canadian Journal of Remote Sensing 11:177-187.
- Murtha, P. A., and R. J. Wiart. 1987. PC-based digital image analysis for mountain pine beetle green attack: preliminary results . Canadian Journal of Remote Sensing 13:92-95.
- Murtha, P. A., and R. J. Wiart. 1989. Cluster analysis of pine crown foliage patterns aid identification of mountain pine beetle currentattack . Photogrammetic Engineering and Remote Sensing 55:83-86.