1. Barker, M., Hoshino, T., Gurcay, O., Wilson, C. B., Nielsen, S. L., Downie, R., Eliason, J.: Development of an animal brain tumour model and its response to therapy with 1,3, bis (chloroethyl)-l-nitrosourea. Cancer Res.33, 976?986 (1973)
2. Choi, B. H., Lapham, L. W.: Autoradiographic studies of migrating neurones and astrocytes of human foetal cerebral cortex in vitro. Exp. mol. pathol.21, 204?217 (1974)
3. Easty, D. M., Wylie, J. A. H.: Screening of 12 gliomata against chemotherapeutic agents in vitro. Brit. med. J.2, 1589?1592 (1963)
4. Gaszo, L., Afra, D.: The mitosis-inhibiting action of vincristine sulphate in tissue cultures of glioblastoma multiforme. Iddegy�g. Szle27, 300?306 (1974)
5. Hansson, H. A., Sourander, P.: Studies on cultures of mammalian retina. Z. Zellforsch.62, 26?47 (1964)