Pansuriya, Dhaval, et al. “Dystocia Due to Dicephalic Parapagus Tetrabrachius Tetrapus Twin Monster in a Cow: A Case Report ”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 18, no. 4, Sept. 2022, pp. 145-6, https://doi.org/10.48165/ijvsbt.18.4.31.