Ullmann; Consonno Chemische Berichte, 1902 , vol. 35, p. 2810 Full Text Show Details Faust; Saame Justus Liebigs Annalen der Chemie, 1871 , vol. 160, p. 66 Full Text Show Details Atterberg Chemische Berichte, 1876 , vol. 9, p. 928