1. An ignition method for determination of total phosphorus in lake sediments;Anderson;Water Res.,1976
2. Barison, J., 2003. Nutrient-use efficiency and nutrient uptake in conventional and intensive (SRI) rice cultivation systems in Madagascar. M.Sc. thesis, Cornell University, Ithaca, New York, USA.
3. Phosphate transformations in rice soil;Basak;Soil Sci.,1963
4. Basic EDTA as an extractant for soil organic phosphorus;Bowman;Soil Sci. Soc. Am. J.,1993
5. Isotope methods for assessing plant available phosphorus in acid tropical soils;Bühler;Eur. J. Soil Sci.,2003