S. Kovács, Á. Molnár, G. Szenci, and M. Tóth, “Commercial varieties of European plums grown in Hungary, a comparison of promising foreign varieties with the widely grown traditional ones”, Int. j. hortic. sci., vol. 18, no. 2, pp. 15–22., Jul. 2012, doi: 10.31421/IJHS/18/2/1026.