Al-Shahwany, A.W. et al. 2014. Influence Soaking Gibberellin acid on seed germination for Citrus limetta and Citrus limonum and their seedlings growth. Journal of Biotechnology Research Center. 8, 1 (Jan. 2014), 43–49. DOI:https://doi.org/10.24126/jobrc.2014.8.1.301.