1. H. L. Brockman, in “Lipases,” ed. by B. Borgstorm and H. L. Brockman, Elsevier, Amsterdam, 1984, pp. 3–4.
2. T. Gibson and R. E. Gordon, “Bergey’s Manual of Determinative Bacteriology,” 8th Ed., ed. by R. E. Buchanan and N. E. Gibbons, Williams and Wilkins Co., Baltimore, Md., 1974, pp. 529–550.
3. R. E. Gordon, W. C. Haynes, and C. H.N. Pang, “The GenusBacillus,” United States Department of Agriculture, Washington, D.C., 1973.