S. Yamamoto, H. Shima, и T. Matsumoto. International Journal of Urology: Official Journal of the Japanese Urological Association, 15 (6):
467--471(июня 2008)PMID: 18422575.
K. Hansen, и D. Singer. Pediatric and Developmental Pathology: The Official Journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, 4 (2):
105--121(апреля 2001)PMID: 11178626.