Pendergrass, P. B.; Reeves, C. A.; Belovicz, M. W.; Molter, D. J.; White, J. H. (1996). «The shape and dimensions of the human vagina as seen in three-dimensional vinyl polysiloxane casts». Gynecologic and Obstetric Investigation42 (3): 178–182. doi:10.1159/000291946. PMID8938470.
Pendergrass, P. B.; Reeves, C. A.; Belovicz, M. W.; Molter, D. J.; White, J. H. (2000). «Comparison of vaginal shapes in Afro-American, Caucasian and Hispanic women as seen with vinyl polysiloxane casting». Gynecologic and Obstetric Investigation50 (1): 54–59. doi:10.1159/000010281. PMID10895030.
.Pendergrass, P. B.; Belovicz, M. W.; Reeves, C. A. (2003). «Surface area of the human vagina as measured from vinyl polysiloxane casts». Gynecologic and Obstetric Investigation55 (2): 110–113. doi:10.1159/000070184. PMID12771458.
Ding, Jing; Song, Xiao-Chen; Deng, Mou; Zhu, Lan (3 June 2016). «Which factors should be considered in choosing pessary type and size for pelvic organ prolapse patients in a fitting trial?». International Urogynecology Journal27 (12): 1867–1871. doi:10.1007/s00192-016-3051-3. PMID27260324.
Pendergrass, P. B.; Reeves, C. A.; Belovicz, M. W.; Molter, D. J.; White, J. H. (1996). «The shape and dimensions of the human vagina as seen in three-dimensional vinyl polysiloxane casts». Gynecologic and Obstetric Investigation42 (3): 178–182. doi:10.1159/000291946. PMID8938470.
Pendergrass, P. B.; Reeves, C. A.; Belovicz, M. W.; Molter, D. J.; White, J. H. (2000). «Comparison of vaginal shapes in Afro-American, Caucasian and Hispanic women as seen with vinyl polysiloxane casting». Gynecologic and Obstetric Investigation50 (1): 54–59. doi:10.1159/000010281. PMID10895030.
.Pendergrass, P. B.; Belovicz, M. W.; Reeves, C. A. (2003). «Surface area of the human vagina as measured from vinyl polysiloxane casts». Gynecologic and Obstetric Investigation55 (2): 110–113. doi:10.1159/000070184. PMID12771458.
Ding, Jing; Song, Xiao-Chen; Deng, Mou; Zhu, Lan (3 June 2016). «Which factors should be considered in choosing pessary type and size for pelvic organ prolapse patients in a fitting trial?». International Urogynecology Journal27 (12): 1867–1871. doi:10.1007/s00192-016-3051-3. PMID27260324.