1. Flocks, R.H. 1939. Calcium and phosphorus excretion in the urine of patients with renal or ureteral calculi. J. Am. Med. Accoc. 113:1466–1471.
2. Albright, F., Henneman, P., Benedict, P.H. and Forbes, A.P. 1953. Idiopathic hypercalciuria: a preliminary report. Proc. R. Soc. Med. 46:1077–1081.
3. Pak, C. Y. C., Ohata, M., Lawrence, E. C. and Snyder, W. 1974. The hypercalciurias: causes, parathyroid functions and idiopathic criteria. J. Clin. Invest. 54:387–400.
4. Pak, C. Y. C. 1969. Physicochemical basis for formation of renal stones of calcium phosphate origin: calculation of the degree of saturation of urine with respect to brushite. J. Clin. Invest. 48:1914–1921.
5. Pak, C.Y. C., Hayashi, Y., Finlayson, B. and Chu, S. 1977. Estimation of the states of saturation of brushite and calcium oxalate in urine: a comparison of three methods, J. Lab. Clin. Med. 89:891–901.