Haussknecht Justus Liebigs Annalen der Chemie, 1867 , vol. 143, p. 45 Full Text Show Details v. Grossmann Chemische Berichte, 1893 , vol. 26, p. 641 Full Text Show Details Spieckermann Chemische Berichte, 1895 , vol. 28, p. 277 Chemische Berichte, 1896 , vol. 29, p. 812