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2. “Bergey’s Manual of Determinative Bacteriology,” 8th ed. by R. E. Buchman and N. E. Gibbons, Williams and Wilkins Co., Baltimore, 1974, pp. 758.
3. S. A. Waksman and A. T. Henrici “Bergey’s Manual of Bacteriology,” 6th ed., The Williams and Wilkins Co., Baltimore, 1948, pp. 929.
4. S. A. Waksman and H. Lechevalier, “Guide to the classification and identification of the actinomycetes and their antibiotics,” The Williams and Wilkins Co., Baltimore, 1953, pp. 1.