Ruhemann; Orton Journal of the Chemical Society, 1895 , vol. 67, p. 1012 Show Details Johnson; Nicolet Journal of the American Chemical Society, 1914 , vol. 36, p. 355 View citing articles Show Details Ulpiani; Ferretti Gazzetta Chimica Italiana, 1902 , vol. 32 I, p. 209 Show Details Haas Biochemische Zeitschrift, 1916 , vol. 76, p. 81,84