Zaki, M. F., M. E. El-Azab, S. A. Abou Sedera, and M. M. Abou El-Magd. “Spraying With Commercial Fertilizers Beside Effects of the Bio-Nitrogen and Different Levels of Mineral Nitrogen on Growth, Yield and Quality of Broccoli”. Asian Journal of Applied Sciences, vol. 4, no. 4, Aug. 2016, https://www.ajouronline.com/index.php/AJAS/article/view/3972.