1. Atlas, R, M.: 1984,Microbiology, Fundamentals and Applications, Macmillan Publishing Co., New York, London.
2. Ammar, M. S. and Umbriet, W. W.: 1983,A Bacterial Methanol Oxidizing Enzyme Stimulated by Morphine, Egypt Soc. Appl. Microbiol., Vol. 1, Part 1: Ferment. Microbiol., pp. 207–222.
3. Ammar, M. S., GErber, N. N. and MacDaniel, L. E.: 1979,J. Antibiotics 32, 679.
4. Bresinsky, A. Z.: 1973,The Nature of Some Pigments of Surpula lacrimans. Naturforch., 28C (3–10), 627 (Bot Staatssamlung, Munchen, Germany).
5. Davies, R. R.: 1969,J. Gen. Microbiol 55, 425.