- Upton, R. G. 1945. Bark beetles of the pines of Stephen F. Austin State Teachers College. Texas Academy of Science, Proceedings and Transactions 28:100-102.
- Billings, R., and W. Upton. 1993. Effectiveness of synthetic behavioral chemicals for manipulation and control of southern pine beetle infestations in east Texas. Pages 555-568 In Proceedings of the Seventh Biennial Southern Silvicultural Research Conference, Mobile, Alabama, November 17-19, 1992. United States Department of Agriculture, Forest Service, Southern Forest Experiment Station (New Orleans, LA), General Technical Report SO-93.
- Payne, T., R. Billings, C. Berisford, S. Salom, D. Grosman, M. Dalusky, and W. Upton. 1992. Disruption of Dendroctonus frontalis (Col, Scolytidae) infestations with an inhibitor pheromone . Journal of Applied Entomology 114:341-347.
- Salom, S., R. Billings, W. Upton, M. Dalusky, D. Grosman, T. Payne, C. Berisford, and T. Shaver. 1992b. Effect of verbenone enantiomers and racemic endo-brevicomin on response of Dendroctonus frontalis (Coleoptera: Scolytidae) to attractant-baited traps . Canadian Journal of Forest Research 22:925-931.
- Clarke, S., S. Salom, R. Billings, C. Bensford, W. Upton, Q. McClellan, and M. Dalusky. 1999. A Scentsible approach to controlling southern pine beetles: two new tactics using verbenone . Journal of Forestry 97:26-31.
- Salom, S., R. Billings, C. Berisford, S. Clarke, Q. McClellan, W. Upton, and M. Dalusky. 1997. Integrating tree felling with application of an inhibitor pheromone for suppressing southern pine beetle infestations. Pages 39-53 In J.-C. Grégoire et al. (eds.), Proceedings: Integrating cultural tactics into the management of bark beetles and reforestation pests. United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station (Radnor, PA), General Technical Report NE-236.