Békefi, Zs., et al. “Determination of (in)compatibility Genotypes of Hungarian Sweet Cherry (Prunus Avium L.) Accessions by PCR Based Methods”. International Journal of Horticultural Science, vol. 9, no. 3-4, Oct. 2003, pp. 37-42., https://doi.org/10.31421/IJHS/9/3-4/403.