Vass, N., A. Jávor, P. Balogh, and S. Cseh. “Factors Affecting the Efficiency of Superovulation and Embryo Transfer. Season and Hormonal Background”. Acta Agraria Debreceniensis, no. 40, Dec. 2010, pp. 73-76, doi:10.34101/actaagrar/40/2710.