Ahmad, M., M. Iqbal, Z. Gul, B. A. Khan, M. Shahid, M. saleem, and N. I. Khan. “Genetic Analysis of F2 Population of Tomato for Studying Quantitative Traits in the Cross Between Bushbeef X Nagina”. Journal of Research in Biology, Vol. 6, no. 1, Jan. 2016, pp. 1922-7, https://ojs.jresearchbiology.com/index.php/jrb/article/view/406.