1. Renal and ureteric calculi in a Swedish district, Part 1.;Ahlgren;Acta Chirurgica Scandinavica,1965
2. Renal and ureteric calculi in a Swedish district, Part 2;Ahlgren;Acta Chirurgica Scandinavica,1965
3. Seasonal variations in the incidence of ureteric colic.;AI-Dabbagh;British Journal of Urology,1977
4. Incidence, morbidity and complications of renal and ureteral calculi in a well defined geographical area.;Almby;Scandinavian Journal of Urology and Nephrology,1975
5. A survey of the incidence of urolithiasis in Norway from 1853 to 1960.;Andersen;Journal of Oslo City Hospital,1966