Ördögh, M., E. Jámbor-Benczúr, A. Tilly Mándy, and L. Lelik. “The Effects of Growth Regulators in Proliferation of Sorbus Redliana ’Burokvölgy’”. International Journal of Horticultural Science 12, no. 1 (February 8, 2006): 77-83. Accessed March 29, 2020. https://ojs.lib.unideb.hu/IJHS/article/view/627.