1. Distribution and behavior of selenium in Japanese grasslands (II);Asagawa;Jpn. J. Soil Sci. Plant Nutr.,1977
2. Blakemore, L.C., Searle, P.L., Daly, B.K., 1981. Methods for Chemical Analysis of Soils. New Zealand Soil Bureau Scientific Report 10A. DSIR, New Zealand.
3. Adsorption–desorption reactions of selenium in some soils of India;Dhillon;Geoderma,1999
4. Selenium – an antioxidative protection in soybean during senescence;Djanaguiranman;Plant Soil,2005
5. FAO-UNESCO, 1990. Soil Map of the World. Revised Legend. World Soil Resources Report 60. FAO, Rome.