1. T. P. Stupakova, I.E. Mishustina, and T. G. Kameneva, Mikrobiologiya,52, 967 (1983).
2. L. Hartman and C. A. Lago Regino, Lab. Pract,22, 475 (1979).
3. O. Westphal, O. Luderitz, and F. Bister, Z. Naturforsch.,76, 146 (1952).
4. O. Ouchterlony, Acta Path. Microbiol. Scand.,32, 231 (1953).
5. S. Levine, H. Stevenson, and L. Chambers, J. Bacteriol.,65, 101 (1953).