Deuschel Helvetica Chimica Acta, 1951 , vol. 34, p. 2403,2410 Full Text Show Details Gal'pern et al. Trudy Inst. Nefti Akad. S.S.S.R.Chem.Abstr., 1958 , vol. 12, p. 38,39 Trudy Inst. Nefti Akad. S.S.S.R.Chem.Abstr., 1960 , p. 12020 Full Text Show Details Ebel; Deuschel Chemische Berichte, 1956 , vol. 89, p. 2799,2806