Abel, E. Z. phys. Ch., 1928 , vol. 136, p. 167 - 167 Full Text Show Details Abel, E. Z. phys. Ch., 1928 , vol. 136, p. 168 - 168 Full Text Show Details Abel, E. Z. phys. Ch., 1928 , vol. 136, p. 175 - 175 Full Text Show Details Gmelin Handbook: I: MVol.2, 151, page 581 - 584