[7] Amer. Chem. Journ. X, 148.
[8] Journ. f. prakt. Chem. 79, 281.
[9] Amer. Journ. Science XL, 377.
[10] Pogg. Ann. XXXVIII, 143.
[11] Jahrb. 1855, 390.
[12] Ber. 1884, 2249.
[13] Pogg. Ann. 85, 293.
[14] Amer. Chem. Journ. 11, 219.
[15] Ber. d. deutch. Chem. Gesell. 1874, 1724.
[16] Handb. d. krystallographisch physicalischen Chemie. I, 184.