Heidari, S., Reyhanitabar, A. and Oustan, S. (2016) “The Comparison of Olsen, DMT-HFO and DGT Methods for Assessment of Plant Available Phosphorus in Soils”, International Journal on Advanced Science, Engineering and Information Technology, 6(1), pp. 27–34. doi: 10.18517/ijaseit.6.1.648.