VANAJA, M, et al. “Genotypic Variation for Growth and Yield Response at Two Elevated Levels of CO2 and Three Seasons in Blackgram (Vigna Mungo)”. The Indian Journal of Agricultural Sciences, vol. 85, no. 3, Mar. 2015, pp. 321-30, https://doi.org/10.56093/ijas.v85i3.47078.