1. Ballard, L. A. T., 1973, Seed Sci. Technol.
1:285–303 (seed coat effects).
2. Barton, L. V., 1965, in: Encyclopedia of Plant Physiology, Volume 15/2 (W. Ruhland, ed.), Springer, Berlin, pp. 909–924 (general review on dormancy types).
3. Bewley, J. D., and Black, M., 1982, Physiology and Biochemistry of Seeds, Volume 2, Springer-Verlag, Berlin (all aspects of dormancy).
4. Cavers, P. B., and Harper, J. L., 1966, J. Ecol.
54:367–382 (polymorphism in Rumex).
5. Come, D., and Thevenot, C., 1982, in: The Physiology and Biochemistry of Seed Development, Dormancy and Germination (A. A. Khan, ed.), Elsevier, Amsterdam, pp. 271–298 (embryo dormancy).