Ador; Crafts Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1879 , vol. 88, p. 1355 Full Text Show Details Heller Chem. Zentralbl., 1908 , vol. 79, # I p. 1113 Full Text Show Details Heller Patent: DE193961 ; Full Text Show Details Gabriel; Colman Chemische Berichte, 1900 , vol. 33, p. 448,719 Full Text Show Details Graebe Justus Liebigs Annalen der Chemie, 1905 , vol. 340, p. 247 Full Text Show Details Heller; Schuelke Chemische Berichte, 1908 , vol. 41, p. 3634 Full Text Show Details Ador; Crafts Bulletin de la Societe Chimique de France, 1880 , vol. <2> 34, p. 531 Full Text Show Details Graebe Chemische Berichte, 1896 , vol. 29, p. 826 Justus Liebigs Annalen der Chemie, 1905 , vol. 340, p. 254