1) UMEZAWA, H.: In "Enzyme Inhibitors of Microbial Origin". pp. 1-114. University of Tokyo Press, 1972
2) AOYAGI, T. & H. UMEZAWA: Structure and activities of protease inhibitors of microbial origin. In "Cold Spring Harbor Symposium on Quantitative Biology" (Cold Spring Harbor Laboratory, New York) 39, 1974 in press