References
- Edling and Nils, P. G. (1945) Urethrocystography in the male with special regard to micturition, Acta radiol., suppl. 58
- Howard and Frederic, S. (1948) Hypospadias with enlargement of the prostatic utricle, Surg., Gynec. & Obst., 86, p. 307.
- Piergrossi, A. (1948) Visualizzazione dell'otricolo prostatico nell'uretrografia, Arch, radiol., 22, p. 82.