1. Bemis, A.G., Dindorf, J.A., Horwood, B. and Samans, C. 1982.Kirk Othmer Encyclopedia of Chemical Technology, Edited by: Herman, F.M., Othmer, D.F., Overberg, C.G., Seaborg, G.T., Grayson, M. and Eckroth, D. Vol. 17, 746–758. New York: John Wiley and Sons.
2. Lau, C.M. Proc. 32nd Ind. Waste Conf. Purdue Univ. pp.63–74. Ann Arbor: Ann Arbor Science.
3. Acclimation of activated sludge to mono-substituted derivatives of phenol and benzoic acid.