... could be found in the literature, but we are aware of the fact that a great number of refractive ... 2 (1904) 59, 79 04F1 Fichter, F.; Pfister, A.: Chem.Ber. ... 144 (1907) 1087 07S3 Schimmel & Co.: Centralblatt (1907) (II) 1741 07S4 Schmidt, O.: Z.Phys.Chem.Stoechiom.Verwandtschaftsl. ...