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Lunghi, Laura, Ferretti, Maria E, Medici, Silvia, Biondi, Carla, Vesce, Fortunato (December 2007). Control of human trophoblast function. Reproductive Biology and Endocrinology5 (1): 6. PMID17288592. PMC1800852. DOI: 10.1186/1477-7827-5-6.
Bischof, P, Irminger-Finger, I (January 2005). The human cytotrophoblastic cell, a mononuclear chameleon.. The International Journal of Biochemistry & Cell Biology37 (1): 1–16. PMID15381142. DOI: 10.1016/j.biocel.2004.05.014.
Srisuparp S, Strakova Z, Fazleabas AT (2001). The role of chorionic gonadotropin (CG) in blastocyst implantation. Archives of Medical Research32 (6): 627–34. PMID11750740. DOI: 10.1016/S0188-4409(01)00330-7.