6Maxwell WMC, Johnson LA . Chlortetracycline analysis of boar spermatozoa after maturation,flow cytometric sorting, cooling or cryopreservation.Mol. Reprod. and Dev. ,1997,46:408-418.
7Cormier N, Sirard MA , Bailey JL Premature capacitation of bovine spermatozoa is initiated by cryopreservation. J. of And.,1997, 18:46 1--468.
8Austin CR. Observations on the penetration of the sperm into the mammalian egg. Australian J.of Scientific Research,1951, 4:581-596.
9Chang MC. Fertilizing capacity of spermatozoa deposited into the Fallopian tubes. Nature ,1951,168: 697-698.
10Ward CR, Storey BT. Determination of the time course of capacitation in mouse spermatozoa using a chlortetracycline fluorescence assay. Dev.Bio.,1984, 104:287-296.