Mehra, Keshav, and Veer Sing. “Effects of Irrigation Levels on the Yield of Chickpea (Cicer Arietinum Linn) Due to Incidence of Helicoverpa Armigera”. Bangladesh Journal of Botany, vol. 50, no. 4, Dec. 2021, pp. 1203-7, doi:10.3329/bjb.v50i4.57090.