James, Philip D. A.; Iqbal, Mohammed; Edwards, Clive; Miller, Peter G. G. (June 1991). "Extracellular protease activity in antibiotic-producingStreptomyces thermoviolaceus". Current Microbiology. 22 (6): 377–382. doi:10.1007/BF02092158. S2CID6942783.
James, Philip D. A.; Iqbal, Mohammed; Edwards, Clive; Miller, Peter G. G. (June 1991). "Extracellular protease activity in antibiotic-producingStreptomyces thermoviolaceus". Current Microbiology. 22 (6): 377–382. doi:10.1007/BF02092158. S2CID6942783.
Tsujibo, H; Okamoto, T; Hatano, N; Miyamoto, K; Watanabe, T; Mitsutomi, M; Inamori, Y (November 2000). "Family 19 chitinases from Streptomyces thermoviolaceus OPC-520: molecular cloning and characterization". Bioscience, Biotechnology, and Biochemistry. 64 (11): 2445–53. doi:10.1271/bbb.64.2445. PMID11193414. S2CID22119850.