1SATHESHKUMAR S, SUBRAMANIAN A, DEVANATHAN T G, et al. Follicular and endocrinological turnover associated with GnRH induced follicular wave synchronization in Indian crossbred cows [J]. Theriogenology, 2012, 77(6):1144-1150.
2BAS S, PINTO C G, DAY M L, et al. Effect of intrauterine admin- istration of gonadotrepin releasing hormone on serum LH concentra- tions in lactating dairy cows[J]. Theriogenology, 2012, 78 (6) : 1390 -1397.