M.D. TUTI, et al. “Productivity, Economics and Energetics of Pigeonpea (Cajanus Cajan)-Based Cropping Systems in Mid-Hills of Northwest Himalaya”. Indian Journal of Agronomy, vol. 58, no. 3, Oct. 2001, pp. 303-8, https://doi.org/10.59797/ija.v58i3.4222.