1. 7) Doi, E., and Tsuru, H. α-Aminoacylpeptide hydrolysis enzyme. In: Maruo, B., Tamiya, N. (eds) Koso handbook (In Japanese), Asakura Syoten, Tokyo, pp. 531-536 (1982).
2. 16) Barrett, A.J., Rawlings, N.D., and Woessner, J.F., eds., Metallopeptidases. Handbook of Proteolytic Enzymes, Academic Press, San Diego, pp. 989 (1988).