Oren-Benaroya R, Orvieto R, Gakamsky A, Pinchasov M, Eisenbach M (October 2008). "The sperm chemoattractant secreted from human cumulus cells is progesterone". Human Reproduction. 23 (10): 2339–2345. PMID18621752. डीओआइ:10.1093/humrep/den265.
Oren-Benaroya R, Orvieto R, Gakamsky A, Pinchasov M, Eisenbach M (October 2008). "The sperm chemoattractant secreted from human cumulus cells is progesterone". Human Reproduction. 23 (10): 2339–2345. PMID18621752. डीओआइ:10.1093/humrep/den265.