S. N. Shukla, S. K. Agarwal, S. K. Singh, U. Shankar, and A. Mitra, “Effect of COX-2 modulator on estrous cycle and prostaglandins secretion in Buffalo (Bubalus bubalis)”, Indian J of Anim Sci, vol. 81, no. 6, Jun. 2011, doi: 10.56093/ijans.v81i6.6235.