AVTAR, R, et al. “Hybrid-Seed Production in Cytoplasmic Male-Sterile Lines of Upland Cotton (Gossypium Hirsutum) through Insect Pollination”. The Indian Journal of Agricultural Sciences, vol. 64, no. 7, Apr. 2013, https://epubs.icar.org.in/index.php/IJAgS/article/view/29308.