1. Tweeddale, D. N.: Urinary cytology. In press.
2. Geisse, L. J. and Tweeddale, D. N.: Bladder tumors: scope or slide. Unpublished data.
3. Carcinoma-in-situ of the urothelium;Daly;Urol. Clin. N. Amer.,1976
4. Pre-cancerous changes in the bladder epithelium;Schade;Lancet,1968
5. Research strategy in cancer: screening, diagnosis, prognosis;Berlin;Hosp. Prac.,1975