1. . 1993.
2. 9) Ramirez, C., Manual and atlas of the Penicilla, Elsevier Biomedical Press, Amsterdam, 1982.
3. 14) Sambrook, J., Fritsch, E. F., and Maniatis, T., Molecular cloning: a laboratory anual 2nd ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, 1989.