Matsuzawa, H., Tokugawa, K., Hamaoki, M., Mizoguchi, M., Taguchi, H., Terada, I., Kwon, S.T. and Ohta, T. (1988). „Purification and characterization of aqualysin I (a thermophilic alkaline serine protease) produced by Thermus aquaticus YT-1”. Eur. J. Biochem.171: 441-447. PMID3162211.
Tanaka, T., Matsuzawa, H., Kojima, S., Kumagai, I., Miura, K. and Ohta, T. (1998). „P1 specificity of aqualysin I (a subtilisin-type serine protease) from Thermus aquaticus YT-1, using P1-substituted derivatives of Streptomyces subtilisin inhibitor”. Biosci. Biotechnol. Biochem.62: 2035-2038. PMID9882104.