“Productivity and Quality of Intercropped Maize (Zea Mays L.) + Cowpea [Vigna Unguiculata (L.) Walp.] Fodder As Influenced by Nitrogen and Phosphorus Levels”. Range Management and Agroforestry, vol. 35, no. 2, Nov. 2021, pp. 263-7, https://www.rmaj.in/rma/article/view/397.