1. Balodis, V. A., Ivanov, V. B.: [Study of the cell division in the root.] In Russ. - Tsitologiya12: 983–992, 1970.
2. Brumtield, R. T.: Cell growth and division in living root meristems. - Amer. J. Bot.29: 533 to 543, 1942.
3. Clowes, F. A. L.: The cessation of mitosis at the margins of a root meristem. - New Phytol.74: 263–271, 1975.
4. Davidson, D.: [Heterogeneity of cell populations in the root meristem.] In Russ. - Fiziol. Biokhim. kul’t. Rast.9: 3–17, 1977.
5. Dinwoodie, J. M.: Tracheid and fibre length in timber. A review of literature. - Forestry34: 125 to 144, 1961.