Baudler, Marianne; Heumueller, Heinz
Zeitschrift fuer Naturforschung, B: Chemical Sciences, 1987 , vol. 42, # 9 p. 1075 - 1078

Baudler, Marianne; Gruner, Christian; Tschaebunin, Helmut; Hahn, Josef
Chemische Berichte, 1982 , vol. 115, # 5 p. 1739 - 1745