1. Beauchamp, P. de, 1952. Un facteur de la variabilit� chez les rotif�res du genre Brachionus. C. r. Acad. Sci. (Paris) 234: 573?575.
2. Beuter, K., Wissel, C. & Halbach, U., 1981. Correlation and spectral analyses of a controlled rotifer population, pp. 61?82. In: Chapman, D. G. & Galucci, V. F. (eds.), Quantitative Population Dynamics (Statistical Ecology Series 13).
3. Birch, L. C., 1948. The intrinsic rate of natural increase of an insect population. J. anim. Ecol. 17: 15?26.
4. Brauer, M., 1983. (in press). Intra-and interindividual variation in filtration rates of Brachionus calyciflorus Pallas (Rotatoria). Thesis Johann Wolfgang Goethe-Univ., Frankfurt am Main.
5. Cook, L. M., 1965. Oscillations in the logistic growth model. Nature 207: 316.