共 23 条
- [1] BANIK UK, 1969, J REPROD FERTIL, V18, P509
- [2] BLISS CI, 1954, OUTLINE BIOMETRY NEW
- [3] Casas J H, 1970, Biol Reprod, V2, P315, DOI 10.1095/biolreprod2.2.315
- [5] Chang M C, 1970, Nature, V226, P1262, DOI 10.1038/2261262a0
- [9] DZIUK PJ, 1968, AM J VET RES, V29, P2415