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Gabriel; Stelzner Chemische Berichte, 1896 , vol. 29, p. 1313 Full Text Show Details Schorlemmer Journal fuer Praktische Chemie (Leipzig), 1902 , vol. <2> 65, p. 305 Full Text Show Details Staedel Justus Liebigs Annalen der Chemie, 1894 , vol. 283, p. 157 Full Text Show Details Geigy, Koenigs Chemische Berichte, 1885 , vol. 18, p. 2402 Full Text Show Details Freund Monatshefte fuer Chemie, 1896 , vol. 17, p. 399