1. Fischer, A., H. Laser u.H. Mayer, Z. Krebsforsch.32, 99 (1930).
2. Strangeways, T. S. P., Tissue cultures in relation to growth and differentiation. Cambridge 1924.
3. Fischer, A., u.R. C. Parker, Arch. exper. Zellforsch.8, 297 (1929).
4. Fischer, A., u.R. C. Parker, Arch. exper. Zellforsch.8, 325 (1929).
5. Zakrzewski, Z., Bull. Acad. polon. Sci., Cl. Sci. math. et natur., S. B2 (1930).