Svechnikov K, Landreh L, Weisser J, Izzo G, Colón E, Svechnikova I, Söder O (2010). "Origin, development and regulation of human Leydig cells". Horm Res Paediatr.73 (2): 93–101. PMID20190545. doi:10.1159/000277141.
Svechnikov K, Landreh L, Weisser J, Izzo G, Colón E, Svechnikova I, Söder O (2010). "Origin, development and regulation of human Leydig cells". Horm Res Paediatr.73 (2): 93–101. PMID20190545. doi:10.1159/000277141.