P. T. Nagy, I. Kincses, J. Nyéki, T. Szabó, M. Soltész, and Z. Szabó, “Effect of late spring frost event on nutrition aspects of a sour cherry orchard in East Hungary”, Int. j. hortic. sci., vol. 17, no. 4-5, pp. 93–97., Dec. 2011, doi: 10.31421/IJHS/17/4-5/977.