1. Colbert's Evolution of the Vertebrates: a History of the Backboned Animals Through Time;Colbert,2001
2. Colyer's Variations and Diseases of the Teeth of Animals, revised edition;Miles,1990
3. Numerical anomaly of teeth in mongrel juvenile dogs Canis familiaris;Imamura;Jpn J Oral Biol,1989
4. Anomalies of dentition in beagles bred for research;Kitamura;Aichi-Gakuin J Dent Sci,1992
5. Variability of dentition in the bat-eared fox, Otocyon megalotis;Koyasu;Aichi-Gakuin J Dent Sci,1993