1. Epidural analgesia in the treatment of bladder carcinoma;Brown;Anaesthesia,1974
2. Evaluation of Helmstein's distension method for carcinoma of the bladder;England;British Journal of Urology,1973
3. Initial experience with Helmstein's treatment by a hydrostatic pressure technique in carcinoma of the bladder;Glashan;British Journal of Surgery,1974
4. Hydrostatic pressure therapy-a new approach to the treatment of carcinoma of the bladder;Helmstein;Opuscula Medica (Stockh.),1966
5. Helmstein, K. (1971). Results of distension therapy for bladder cancer. Lecture given at International Bladder Cancer Conference, Leeds, September 1971.