Faix, A.; Lapray, J. F.; Callede, O.; Maubon, A.; Lanfrey, K. (15 February 2002). "Magnetic Resonance Imaging (MRI) of Sexual Intercourse: Second Experience in Missionary Position and Initial Experience in Posterior Position". Journal of Sex & Marital Therapy. 28 (sup1): 63–76. doi:10.1080/00926230252851203. PMID11898711.
nih.gov
pubmed.ncbi.nlm.nih.gov
Faix, A.; Lapray, J. F.; Callede, O.; Maubon, A.; Lanfrey, K. (15 February 2002). "Magnetic Resonance Imaging (MRI) of Sexual Intercourse: Second Experience in Missionary Position and Initial Experience in Posterior Position". Journal of Sex & Marital Therapy. 28 (sup1): 63–76. doi:10.1080/00926230252851203. PMID11898711.