Chhetri, Binoy, and A. C. Sinha. 2019. “Competitive Indices and Production of Maize (Zea Mays L.) and Cowpea (Vigna Unguiculata) Intercropping System As Influence by Nutrient Management Practices”. International Journal of Bio-Resource and Stress Management 10 (Apr, 2):203-14. https://ojs.pphouse.org/index.php/IJBSM/article/view/3815.