1. Bachmann, K., Goin, O.B., Goin, C.J.: Nuclear DNA amounts in vertebrates. Brookhaven Symp. Biol. 23, 419?450 (1972)
2. Bennett, M.D.: Nuclear DNA content and minimum generation time in herbaceous plants. Proc. roy. Soc. B 181, 109?135 (1972)
3. Bennett, M.D., Smith, J.B.: Nuclear DNA amounts in angiosperms. Phil. Trans. B 274, 227?274 (1976)
4. Britten, R.J., Davidson, E.H.: DNA sequence arrangement and preliminary evidence on its evolution. Fed. Proc. 35, 2151?2157 (1976)
5. Chambers, K.L.: A biosystematic study of the annual species of Microseris. Contrib. Dudley Herbarium (Stanford) 4, 207?312 (1955)