1. Herringham, W. P.: Kidney Diseases. Oxford Medical Publication, page 23.
2. Cabot, Hugh: Modern Urology, vol. 11, second edition, p. 146.
3. Nephritis and urinary calculi after production of chronic foci of infection;Rosenow;Jour. Amer. Med. Assoc.,1922
4. Etiology of urinary lithiasis; an experimental study;Keyser;Arch. Surg.,1923