Mohammadi, Morteza, Abdolreza Bagheri, Hasan Marashi, Nasrin Moshtaghi, and Ahmad Balandari. 2011. “Investigation into Seasonal Effect and Browning Inhibitor on Callus Regeneration of Seedless Barberry (Berberis Vulgaris Var. Asperma)”. Plant Tissue Culture and Biotechnology 21 (2):161-68. https://doi.org/10.3329/ptcb.v21i2.10239.