1. Carcinoma of the urachus;Beck;Br. J. Urol.,1970
2. Carcinoma of the urachus;Whitehead;Br. J. Urol.,1971
3. Gallertkrebs einer urachucyste;Pendl;Beitr. Klin. Chir.,1914
4. The colloid adenocarcinomata of the bladder vault arising from the epithelium of the urachal canal;Begg;Br. J. Surg.,1931
5. Carcinoma of the urachus;Han;Am. J. Roentgenol.,1976