1. Pepper, O. H. P.: Studies on the specific gravity of the urine. Jour. Clin. Invest., October, 1924, i, No. 1.
2. Renal Function;Richards,1921
3. The secretion of dyes and other substances in frogs’ kidneys and its bearing upon theories of renal secretions;Hirschfelder;Amer. Jour. Physiol.,1924
4. The practical value of chemical analysis of the blood in urological conditions;Bandler;Jour. Urol.,1928
5. Non-protein nitrogen in the blood and tissues in renal disease;BarÁT;Deutsch. Arch. f. Klin. Med.,1922