Halász, J., et al. “Preliminary Characterization of the Self-Incompatibility Genotypes of European Plum (Prunus Domestica L.) Cultivars”. International Journal of Horticultural Science, vol. 20, no. 3-4, Sept. 2014, pp. 23-26., https://doi.org/10.31421/IJHS/20/3-4/1128.