1. Declaration on the Human Environment — The United Nations Conference on the Human Environment, Stockholm, June 1972, through.10
2. Chem. Marktg. Rept., 233 (9) (1988) 7+15.
3. R. Kalvoda and R. Parsons, Electrochem. Res. Dev. Proceedings of the UNESCO Forum, 1984, Publ. (1985) 103, C.A. 105 69015n.
4. H. Bretscher, G. Eigenmann and E. Plattner, Chimia, 32 (1978) 173.
5. R. Kammel, Vortr. Rheinisch-Westfäl. Akad. Wiss. Nat. Ing.- Wirtschaftswiss., 316 (1983) 7–30;C.A. 98 184907d.