[18] Am. Chem. Journ. XVII, 347.
[19] Ibid. XVIII, 798.
[20] Ber. XXVI, 204.
[21] Am. Ch. Journ. XVIII-799
[22] Am. Chem. Journ. XVI-525
[23] Am. Ch. Journ. XVI-527.
[24] Am. Chem. Journ. XIX-199
[25] Ber. XVII-2545; XXIII, 3430.
[26] Am. Ch. Journ. XVIII-810.
[27] Inaug. Diss. J. H. Unis. 1895.