1. On concrements from urinary tract;Tovborg Jensen;II. Acta chir. scandinav.,1941
2. Biophysical investigations of urinary calculi: An ray crystallographic and microradiographic study;Lagergren;Acta radiol.,1956
3. Rapid identification of urinary calculi through use of x-ray analysis;Smothers;J. Urol.,1954
4. X-ray crystallographic studies on apatites and calcified structures;Carlström;Acta radiol.,1955