- Ragenovich, I. R. 1979. Forest insect and disease conditions in the Southwest, 1978. United States Department of Agriculture, Forest Service (Southwestern Region, Forest Insects and disease Management), Research Note27.
- Ragenovich, I. R., and H. D. Brown. 1980. Southwestern Region (R-3). Pp. 20-24. in: Forest Insect and Disease Conditions in the United Sates 1978. Orr, P. W. (eds.) United States Department of Agriculture, Forest Service. iv+83 pp..
- Barry, P. J., and I. Ragenovich. 1976. Evaluation of southern pine beetle infestations on the London and Somerset Districts, Daniel Boone National Forest, Kentucky. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-18.
- Berisford, C. W., U. E. Brady, G. E. Fitzpatrick, C. K. Franklin, F. L. Hastings, A. S. Jones, J. H. Lashomb, R. F. Mizell, W. W. Neel, and I. R. Ragenovich. 1981. Efficacy studies: Prevention . United States Department of Agriculture, Forest Service, Southern Forest Experiment Station, General Technical Report SE- 21:3-8.
- Berisford, C. W., U. E. Brady, G. E. Fitzpatrick, J. H. Lashomb, R. F. Mizell, W. W. Neel, and I. R. Ragenovich. 1981. Efficacy studies: Remedial . United States Department of Agriculture, Forest Service, Southern Forest Experiment Station, General Technical Report SE- 21:9-10.
- Berisford, C. W., U. E. Brady, R. F. Mizell, J. H. Lashomb, G. E. Fitzpatrick, I. R. Ragenovich, and F. L. Hastings. 1980. A technique for field testing insecticides for long term prevention of bark beetle attack . Journal of Economic Entomology 73:694-697.
- Berisford, C. W., U. E. Brady, and I. R. Ragenovich. 1981. Residue studies . United States Department of Agriculture, Forest Service, Southern Forest Experiment Station, General Technical Report SE- 21:11-12.
- Coster, J. E., and I. R. Ragenovich. 1976. Effects of six insecticides on emergence of some parasites and predators from southern pine beetle infested trees . Environmental Entomology 5:1017-1021.
- Ghent, J., and I. Ragenovich. 1976. Evaluation of the southern pine beetle infestations on the Chickamauga and Chattanooga National Military Park. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-28.
- Leuschner, W. A., H. E. Burkhart, G. D. Spittle, I. R. Ragenovich, and R. N. Coulson. 1976. A descriptive study of host and site variables associated with the occurrence of Dendroctonus frontalis Zimm. in east Texas. Southwestern Entomologist 1(3):141-149.
- Ragenovich, I. R. 1973. Laboratory studies on the developmental biology of Thanasimus dubius. Fab. (Coleoptera: Gleridae). Unpublished thesis, Mississippi State University, State College. 34 p.
- Ragenovich, I. R. 1976a. Evaluation of the southern pine beetle infestations on the Daniel Roone National Forest, Kentucky. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-25.
- Ragenovich, I. R. 1976b. Evaluation of the southern pine beetle infestations on the George Washington and Jefferson National Forests, Virginia. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-20.
- Ragenovich, I. R. 1976c. Evaluation of the southern pine beetle infestation on the National Forests of Georgia. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-23.
- Ragenovich, I. R. 1976d. Evaluation of the southern pine beetle infestations on the National Forests of South Carolina. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 76-1-21.
- Ragenovich, I. R. 1977a. An evaluation of sub-zero temperatures on southern pine beetle populations in North Carolina, Tennessee, and Georgia. United States Department of Agriculture, Forest Service, Southern Region and Southeastern Area, Forest Pest Management, Report 77-1-9.
- Ragenovich, I. R. 1977b. Evaluation of several concentrations of Chlorpyrifos for remedial and preventive control of southern pine beetle, Dendroctonus frontalis Zimmermann. United States Department of Agriculture, Forest Service, Southern Region, Forest Pest Management, Report 78-1-5.
- Ragenovich, I. R. 1977c. Evaluation of southern pine beetle infestation on the Rig Thicket National Preserve. United States Department of Agriculture, Forest Service, Southern Region, Forest Pest Management, Report 77-1-1.
- Ragenovich, I. R. 1977d. Evaluation of southern pine beetle infestations on the Blue Ridge Parkway, North Carolina. United States Department of Agriculture, Forest Service, Southern Region, State and Private Forestry, Forest Pest Management, Report 77-1-8.
- Ragenovich, I. R. 1978a. Evaluation of the southern pine beetle infestations on the Chickamuauga-Chattanooga National Military Park. United States Department of Agriculture, Forest Service, Southern Region, Forest Pest Management, Report 78-1-1.
- Ragenovich, I. R. 1978b. Southern pine beetle evaluation, Stearns Ranger District, Daniel Roone National Forest, Kentucky. United States Department of Agriculture, Forest Service, Southern Region, Forest Pest Management, Report 78-1-6.
- Ragenovich, I. R. 1978c. Southern pine beetle evaluation, Uwharrie Ranger District, North Carolina. United States Department of Agriculture, Forest Pest Management, Southern Region, Report 78-1-4.
- Ragenovich, I. R. 1980a. Effects of subzero Fahrenheit temperatures on southern pine beetle populations in the southern Appalachians . Southern Journal of Applied Forestry 4:201-203.
- Ragenovich, I. R. 1980b. Southwestern Region (R-3). Pages 20-24 in P. W. Orr and H. D. Rrown, Forest insect and disease conditions in the United States, 1978. United States Department of Agriculture, Forest Service. iv + 83 p.
- Ragenovich, I. R. 1982. Riological evaluation, spruce beetle, Fort Apache Indian Reservation, Arizona. United States Department of Agriculture, Forest Service, Southwestern Region, State and Private Forestry, Report R3-82-6. 22 p.
- Ragenovich, I. R., and J. E. Coster. 1974. Evalua-' tion of some carbamate and phosphate insecticides against southern pine beetle and Ips bark beetles . Journal of Economic Entomology 67:763-765.