1. Attwood, K. C.: Numbers of nuclear sites for aberration formation and the distribution of aberrations. In: Radiation induced chromosome aberrations, ed. S. Wolff, p. 73?86. New York: Columbia University Press 1963.
2. Bajer, A.: Sub-chromatid structure of chromosomes in the living state. Chromosoma (Berl.) 17, 291?302 (1965).
3. Baker, J. R.: Cytological technique, 3rd ed., p. 182. London: Methuen 1950.
4. Bergerard, J., et J. Seugé: La parthénogenèse accidentelle chez Locusta migratoria L. Bull. biol. France et Belg. 90, 16?37 (1959).
5. Boss, J. M. N.: The contribution of the chromosomes to the telophase nucleus in cultures of fibroblasts of the adult crested newt Triturus cristatus carnifax. Exp. Cell Res. 18, 197?216 (1959).