1. Altmann, R., Die Elementarorganismen. Leipzig, 1890.
2. Burchardt, E., Bichromate und Zellkern. La Cellule,12, 335–373, 1897.
3. Cowdry, E. V., The mitochondrial constituents of protoplasm. Contrib. Embryol. (Carnegie Inst.) Wash.8, 39–160, 1918.
4. - Mitochondria, Golgi Apparatus and Chromidial Substance. In “General Cytology” edited by E. V.Cowdry. 311–382. Chicago, 1924.
5. Crozier, W. J., Cell penetration by acids. VI. The chloracetic acids. Jour. Gen. Physiol.5, 65–79, 1922.