1. H. A. Lechevalier, in “Bergey’s Manual of Systematic Bacteriolgy,” Vol. 2, ed. by P. H. A. Sneath, N. S. Mair, M. E. Sharpe, and J. G. Holt, The Williams & Wilkins Co., Baltimore, 1986, pp. 1458–1506.
2. H. W. Doelle, in “Bacterial Metabolism,” 2nd Ed., ed. by H. W. Doelle, Academic Press, New York, 1975, pp. 284–290.