C. SHEKHAR, et al. “Weed Dynamics, Productivity and Soil Health under Different Tillage and Weed- Control Practices in Wheat (Triticum aestivum)maize (Zea Mays) Cropping Sequence”. Indian Journal of Agronomy, vol. 59, no. 4, Oct. 2001, pp. 561-7, https://doi.org/10.59797/ija.v59i4.4597.