Bellus; Fischer; Greuter; Martin Helvetica Chimica Acta, 1978 , vol. 61, # 5 p. 1784 - 1813 Title/Abstract Full Text View citing articles Show Details Ciba-Geigy AG, Basel (Schweiz) Patent: DE2616756 , 1976 ; Chem.Abstr., 1977 , vol. 86, # 72011