- Gaumer, G. C. 1967. Effects of phloem temperature and moisture content on survival of southern pine beetle broods. Unpublished thesis, Stephen F. Austin State University, Nacogdoches, Texas. 50 p.
- Gaumer, G. C., and R. I. Gara. 1967. Effects of phloem temperature and moisture content on development of the southern pine beetle . Boyce Thompson Institute for Plant Research, Contributions 23:373-378.