Galica, V., E. Toska, P. Saldutto, G. P. Galatioto, and C. Vicentini. “Use of Transvaginal Ultrasound in Females With Primary Bladder Neck Obstruction. A Preliminary Study”. Archivio Italiano Di Urologia E Andrologia, vol. 87, no. 2, July 2015, pp. 158-60, doi:10.4081/aiua.2015.2.158.