Begum, M., and M. Khan. “N, P, K AND S STATUS OF WHEAT PLANT GROWN ON SALINE SOILS AS INFLUENCED BY GYPSUM, RICE HULL AND DIFFERENT SALINITY LEVELS”. Journal of Advanced Scientific Research, Vol. 4, no. 04, Nov. 2013, pp. 4-11, https://sciensage.info/index.php/JASR/article/view/171.