1. D.G. Ahearn, S.P. Meyers, R.A. Nichols, Appl. Microbiol. 16, 1370–1374 (1968)
2. Aika Industry Co. Ltd., Japanese Patent No. 5,716,5201, 1982a
3. Aika Industry Co. Ltd, Japanese Patent No. 5,717,0701, 1982b
4. G.D. Albertson, R.H. McHale, M.D. Gibbs, P.L. Bergquist, Biochim. Biophys. Acta 1354, 35–39 (1997)
5. J.H. Andrews, R.F. Harris, R.N. Spear, W.L. Gee, E.V. Nordheim, Can. J. Microbiol. 40, 6–17 (1994)