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2. Observations on the analysis of ten thousand urinary calculi;Herring;J Urol,1962
3. Medical evaluation of urolithiasis: Etiologic aspects and diagnostic evaluation;Smith;Urol Clin North Am,1974
4. Primary hyperparathyroidism: A prospective clinical study;Purnell;Am J Med,1971
5. Idiopathic renal lithiasis;Smith,1970