KUSHWAHA, H S, and A S CHANDEL. 2013. “Effect of Soybean (Glycine Max) Intercropping under Different Nitrogen Levels on Yield, Yield Attributes and Quality of Maize (Zea Mays)”. The Indian Journal of Agricultural Sciences 67 (6). https://epubs.icar.org.in/index.php/IJAgS/article/view/29908.