@article {34677,
	title = {A comparative study of vitrification and slow freezing on subsequent developmental capacity of immature sheep oocytes},
	journal = {Theriognology Insigh},
	volume = {2},
	year = {2012},
	pages = {145-152.},
	author = {K.H.El-Shahat and A.M. Hamam}
}
