1. Zuman, P.: Substituents in Organic Polarography, 384 pp. New York: Plenum Press 1967.
2. -Physical Organic Polarography. In: Progr. Phys. Org. Chem. (A. Streitwieser Jr., R. W. Taft, Editors) 5, 81 (1967).
3. Kolthoff, I. M., and J. J. Lingane: Polarography, IInd Ed., 990 pp. New York: Interscience Publ. 1952.
4. Zuman, P.: Organic Polarographic Analysis, pp. 313. London: Pergamon Press 1964.
5. Pietrzyk, D. J.: Anal. Chem. 40, 194 R (1968).