Steudel, R.; Sandow, T. Angewandte Chemie, International Edition in English, 1976 , vol. 15, p. 772 - 773 Full Text Show Details Steudel, R.; Sandow, T. Angewandte Chemie, 1976 , vol. 88, p. 854 - 855 Full Text Show Details Gmelin Handbook: S: SVol.3, 1.4, page 8 - 10