H. G. Davarynejad, T. Szabó, Z. Szabó, J. Nyéki, and I. J. Holb, “Abnormalities of the stigma of sour cherry cultivar”, Int. j. hortic. sci., vol. 14, no. 3, pp. 31–33., May 2008, doi: 10.31421/IJHS/14/3/799.