Fremy, E. Ann. Chim. Phys., 1845 , vol. 15, p. 408 - 488 Full Text Show Details Fremy, E. Liebigs Annalen der Chemie, 1845 , vol. 56, p. 315 - 354 Full Text Show Details Gmelin Handbook: S: MVol.B3, 36, page 1606 - 1608