SAMAR PAL SINGH, et al. “ Influence of Different Irrigation Levels, Planting Methods and Mulching on Yield, Water-Use Efficiency and Nutrient Uptake in Yellow Sarson (Brassica Rapa)”. Indian Journal of Agronomy, vol. 64, no. 1, Oct. 2001, pp. 123-8, https://doi.org/10.59797/ija.v64i1.5244.