1. 1) Kalisz, H. K., Microbial proteinases. In “Advances in Biochemical Engineering/Biotechnology” Vol. 36, ed. Fiechter, A., Springer-Verlag, Berlin, pp. 1–65 (1988).
2. 18) Robb, F. T., and Place, A. R. “Archaea, A Laboratory Manual”, Cold Spring Harbor Laboratory Press, New York (1995).
3. 22) Madowski, G. S., and Rampsy, M. L., Gelatin zymography. In “Protein Structure: A Practical Approach”, ed. Creighton, T. E., Oxford University Press, New York, pp. 21–23 (1997).