Bijay-Singh and Varinderpal-Singh, Amandeep-Singh, R.K. Gupta, Yadvinder- Singh, H.S. Thind,. 2013. “Effect of Rice Husk Ash and Bagasse Ash on Inorganic Phosphorus Fractions and Available Phosphorus in an Alkaline Soil under Rice (Oryza Sativa L.)-Wheat (Triticum Aestivum L.) Cropping System”. Journal of the Indian Society of Soil Science 61 (3). https://epubs.icar.org.in/index.php/JISSS/article/view/35632.