1. Bergey's Manual of Determinative Bacteriology, 8th Edition (1974). Baltimore USA: Williams & Wilkins
2. Callihan, C.D., Dunlap, C.E. (1971). U.S. Environmental Protection Agency, Rep. SW-24c. PB.203?630
3. Callihan, C.D., Dunlap, C.E. (1973). U.S. Environmental Protection Agency. PB. 223?873
4. Crawford, D.L., McCoy, E., Harkin, J.M., Jones, P. (1973). Biotechnol. Bioeng.15, 833?843
5. Dunlap, C.E. (1973) In: Single-Cell Protein 2, H.P. Tannenbaum and D. I-cyan Wang, eds., pp. 244?262. Cambridge Mass.: MIT