1. Ein Fall von ausgedehnter Leukoplakie in der Harnblase;Akima;Jap. J. Dermatol, and Urol.,1937
2. Leukoplakie der Harnwege bei Schrumpf blase;Akerberg;Ztschr. f. urol. Chir.,1932
3. Case of leukoplakia with prostatic calculus and other lesions of urinary tract;Comotto;Rev. Argent, de urol.,1937
4. Two cases of leukoplakia of urinary bladder;Krakovskiy;Sovet. khir.,1936
5. Leukoplakia and carcinoma of the urinary bladder: report of a case with a review of the literature;Rabson;J. Urol.,1936