D. Kumar, T. Anand, R. A. Shah, M. K. Singh, M. S. Chauhan, and R. S. Manik, “Expression patterns of OCT-4 and NANOG genes in buffalo (Bubalus bubalis) embryos produced by in vitro fertilization or parthenogenetic activation”, Indian J of Anim Sci, vol. 82, no. 8, pp. 834–837, Aug. 2012, doi: 10.56093/ijans.v82i8.23002.