1. Barlow, P., 1977: Determinants of nuclear chromatin structure in Angiosperms. Ann. Sci. Nat., Bot. Biol. Végét., Ser. 12,18, 193?206.
2. -Barlow, S., 1980: Nuclear structures and cell differentiation within a root apex. Ann. Rep. Austr. Natl. Univ. Sch. Biol. Sci., 42.
3. ?,Hines, E. R., 1981: Chromatin organization and cell differentiation in the root apex of maize. Ann. Rep. ARC Letcombe Lab.1980, 70.
4. Brasch, K., Sinclair, G. D., 1978: The organization, composition and matrix of hepatocyte nuclei exposed to ?-amanitin. Virchows Arch. B Cell Pathol.27, 193?204.
5. Derenzini, M., Pession-Brizzi, A., Betts-Eusebi, C., Novello, F., 1981: Relationship between the fine structural organization of chromatin and nucleic acid synthesis in regenerating rat hepatocytes. J. Ultrastruct. Res.75, 229?242.