Guolong, M.; Hong, C.; Shiping, L.; Hongyu, C.; Dejun, J.; Rongqing, G.; Chunfang, C.; Yonghong, L. (2007). „Phylogenetic Relationships and Status Quo of Colonies for Gayal Based on Analysis of Cytochrome b Gene Partial Sequences“. Journal of Genetics and Genomics. 34 (5): 413–419. doi:10.1016/S1673-8527(07)60045-9. PMID17560527.
Guolong, M.; Hong, C.; Shiping, L.; Hongyu, C.; Dejun, J.; Rongqing, G.; Chunfang, C.; Yonghong, L. (2007). „Phylogenetic Relationships and Status Quo of Colonies for Gayal Based on Analysis of Cytochrome b Gene Partial Sequences“. Journal of Genetics and Genomics. 34 (5): 413–419. doi:10.1016/S1673-8527(07)60045-9. PMID17560527.