Shirazi, A., Borjian, S., Nazari, H., Ahmadi, E., Heidari, B., & Bahiraee, A. "Effects of Timing on Cell Biopsy from Pre-compacted Morula Stage Bovine Embryos on Subsequent Embryonic Development", Journal of Reproduction & Infertility, 11, 1, 2010, 25-32.