1. Kidney stones;Pak;Lancet,1998
2. Nephrolithiasis;Pak;Endocrinol Metab Clin North Am,2002
3. Prehistoric or predynastic Egyptian calculus;Shattock;Trans Path Sci Lond,1905
4. Urolithiasis in childhood;Bichler;Monatsschr Kinderheild,1985
5. Factors influencing bladder stone formation in patients with spinal cord injury;Favazza;J Spinal Cord Med,2004