1. Albihn A, Gustafsson H, Rodriguez-Martinez H, Larsson K Development of day 7 bovine demiembryos transferred into virgin and repeatbreeder heifers. Anim. Reprod. Sá. 1989, 27, 161–176.
2. Arav A Vitrification of oocytes and embryos. In: Lauria S, Gandolti F. (eds.): Embryonic development and manipulation in animal production. Portland Press, London and Chapel Hill 1993, 255–264.
3. De Leeuw AM, Rail WF, den Daas JHG, Kruip AM Comparative studies of the efficacy of rapid cryopreservation methods for bovine embryos. 7th Sci. Meet. A.E.T.E., Cambridge 1991, 77–86.
4. Dinnyés A, Keefer CL, Stice SL, Solti L, Vajta G, Machåty Z, Rail WF Vitrification of IVFMC bo-vine embryos in VS3a and EFS solutions: A preliminry report. Theriogenology 1994, 41, 189.
5. Dobrinsky JR Cryopreservation of porcine embryos: Current status and perspectives. Embryo transfer newsletter 1993, 11, 13–18.