1. Hutzinger, O., Sundström, G., Safe, S.: Chemosphere 1, 3 (1976)
2. Weil, E.D., in: Encyclopedia of Chemical Technology. Kirk, R.E., Othmer, D.F. (Eds.) Vol. 10, 3rd Ed. pp. 348–419, 1981. Wiley-Interscience, N.Y.
3. Chadwick, D.H., Watt, R.S., in: Phosphorus and its compounds. Vol. 2. (Ed.) Van Wazer, J.R., Interscience, N.Y. 1961, pp. 1221–1279
4. Smith, M.I., Elvove, E., Frazier, W.H.: Public Health Rep. 45, 2509 (1930)
5. Abelson, P.H.: Science 197, 113 (1977)