1. H. L. Sadoff, “Methods in Enzymology,” Vol. 9, ed. by S. P. Colowick and N. O. Kaplan, Academic Press Inc., New York, 1966, p. 92.
2. H. L. Sadoff, J. A. Bach and J. W. Kools, “Spores III,” ed. by L. L. Campbell and H. O. Halvorson, Am. Soc. Microbiol., Washington D.C., 1965, p. 97.
3. E. Layne, “Methods in Enzymology,” Vol. 3, ed. by S. P. Colowick and N. O. Kaplan, Academic Press Inc., New York, 1957, p. 451.