1. Coe FL: Renal colic and flank pain. In: SG Massry, RJ Glassock, eds, Textbook of Nephrology. Elsevier, New York, 1980.
2. Bretland PM: Acute Ureteric Obstruction. Appleton-CenturyCrofts, London, 1972.
3. Coe FL: Nephrolithiasis: Pathogenesis and Treatment. Year Book Medical, Chicago, 1978.
4. Greene ML, Fujimoto WY, Seegmiller JE: Urinary xanthine stone: A rare complication of allopurinol therapy. N Engl J Med 280: 426, 1969.
5. Coe FL: Calcium-uric acid nephrolithiasis. Arch Intern Med 138: 10–90, 1978.