1. Changes in the photosynthetic metabolism during the early ontogeny of four cactus species;Altesor;Acta Oecologica,1992
2. Environmental effects on seed development and hardseededness in Stylosanthes hamata cv. Verano. II. Moisture and illuminance;Argel;Australian Journal of Agricultural Research,1983
3. Seed and seedling ecology of Opuntia compressa in Tennessee cedar glades;Baskin;Journal of the Tennessee Academy of Science,1977
4. Baskin, J.M., Baskin, C.C., 1998. Seeds. Ecology, Biogeography and Evolution of Dormancy and Germination. Academic Press Inc., San Diego, CA, 666pp.
5. Boas, M.L., 1983. Mathematical Methods in the Physical Sciences, 2nd Edition. Wiley, New York, NY, 793pp.