Bobko, C.M. 2010. Facility focus: The Denver Zoo program – the past, present and future. The Crash January 2010: 4-10.
Bobko, C.M. 2006. Reproductive management strategies for an aging female black rhinoceros (Diceros bicornis michaeli) at the Denver Zoological Foundation. In: Rhino Keeper Workshop 2006. Proceedings of the Fourth Rhino Keepers workshop 2005 at Columbus, Ohio. Columbus, Rhino Keepers Workshop. pp. 1-5.
DiLorenzo, J.E.; Irlbeck, N.A.; Bobko, C.M.; Dierenfeld, E.S. 2003. Designing analytical software for global data sharing of rhinoceros browse and diet information. Proceedings of the Conference of the Nutrition Advisory Group (NAG) of the American Zoo and Aquarium Association (AZA) no.5: 86-90.
Bobko, C.M. 2002. Identifying potential environmental and behavioral stressors through blood cortisol in the black rhinoceros (Diceros bicornis). In: Aubery, L.; Kennedy, J.; Gaffney, M.; Patton, L.; Slobig, C.; Mehrdadfar, F.; Rhino Keeper Workshop 2002. Proceedings of the [second] Rhino Keepers’ Workshop 2001, Zoological Society of San Diego May 7-10, 2001. San Diego, Zoological Society. pp. 76-78.
Bobko, C.M. 2002. Practical applications of operant conditioning for health, research and behavior in the black rhinoceros. In: Schwammer, H.M.; Foose, T.J.; Fouraker, M.; Olson, D. 2002. A research update on elephants and rhinos: proceedings of the International Elephant and Rhino Research Symposium, Vienna, June 7-11, 2001. Muenster, Schuling. p. 165.
Bobko, C.M. 2001. Practical applications of operant conditioning for health, research and behavior in the black rhinoceros. In: Schwammer, H.M.; Foose, T.J.; Fouraker, M.; Olson, D. 2001. Recent research on elephants and rhinos: Abstracts of the International Elephant and Rhino Research Symposium, June 7-11, 2001. Vienna, Zoologischer Garten. p. 38.
Bobko, C.M.; Phillips, M. 1998. Rhino tracks (rhino illnesses/health problems survey). Animal Keeper's Forum 25 (2): 67-68.
Bobko, C.M.; Phillips, M. 1998. Rhino tracks: hemolytic anemia in black rhinos. Animal Keeper's Forum 25 (3): 112-113.
Bobko, C.M. 1996. Detection and treatment of a possible new disease syndrome in a captive Black rhinoceros (Diceros bicornis). Proceedings of the 23rd National Conference of the American Association of Zoo Keeper's Inc. Detroit, Michigan, October 6-10: 26-30, 2 tables.






