BHUYAN, M., DEKA, B. C., SARMAH, B. C., CHAKRAVARTY, P., & BORAH, B. K. D. (2012). Effect of three concentrations of progesterone in the vaginal sponge for oestrus synchronization in yak. The Indian Journal of Animal Sciences, 82(5). https://doi.org/10.56093/ijans.v82i5.17688