Randall G. Rice, Gerald A. Ballou, Paul D. Boyer, James Murray Luck, Funston G. Lum,
THE PAPAIN DIGESTION OF NATIVE, DENATURED, AND "STABILIZED" HUMAN SERUM ALBUMIN Journal of Biological Chemistry. ,vol. 158, pp. 609- 617 ,(1945) ,
10.1016/S0021-9258(19)51337-0