“An Integrated Nutrient Management Approach for Improving Maize (Zea mays L.) Yield: Nutrient Management for Maize Crop”, Pakistan Journal of Scientific & Industrial Research, vol. 54, no. 2, pp. 64–70, Aug. 2011, doi: 10.52763/PJSIR.BIOL.SCI.54.2.2011.64.70.