Dobránszky, J., and N. Mendler-Drienyovszki. “Cytokinins Affect the Stomatal Conductance and CO2 Exchange of in Vitro Apple Leaves”. International Journal of Horticultural Science 20, no. 1-2 (April 22, 2014): 25–28. Accessed December 5, 2021. https://ojs.lib.unideb.hu/IJHS/article/view/1112.