1. Andrew, C.S.: Effect of calcium, pH and nitrogen on the growth and chemical composition of some tropical and temperate pasture legumes. I. Modulation and growth. Austr. J. Agric. Res. 27, 611–623 (1976)
2. Andrew, C.S.; Hutton, E.M.: Effect of pH and calcium on the growth of tropical pasture legumes. Proc. 12. Int. Grassland Congr., Moscow; USSR pp. 21–25 (1974)
3. Anon.: Glycine javanica — its strengths and weaknesses. Rur. Res. CSIRO 59, 11–17(1967)
4. Buckman, H.O.; Brady, N.C.: The nature and property of soils. London: MacMillan, 1969
5. Crocker, W.; Barton, L.V.: Physiology of Seeds. Mass.: Waltham 1957