1. H. Brockenhoff and Robert G. Jensen, “Lipolytic Enzymes,” Academic Press, New York, 1974, p. 139.
2. B. M. Gibbs, “Identification Methods for Microbiologists,” ed. by D. A. Shapton, Academic Press, London, 1968.
3. R. E. Buchananet al., “Bergey’s Manual of Determinative Bacteriology,” 8th Ed., Waverly Press, 1974.