Mas-ud, M., G. Salifu, and A. Napoleon. “Influence of Spatial Arrangement on Agronomic Performance of Maize (Zea Mays L.) - Groundnut (Arachis Hypogea) Intercropping”. The International Journal of Science & Technoledge, vol. 4, no. 1, Jan. 2016, http://internationaljournalcorner.com/index.php/theijst/article/view/123745.