G. Antal, E. Kurucz, K. Koncz, L. Kaszás, and M. G. Fári, “Effect of hydroponic and peat-free media in transplant production of Rudbeckia hirta varieties under different photoperiodic lighting and their photosynthetic parameters”, Int. j. hortic. sci., vol. 27, pp. 110–117, Aug. 2021, doi: 10.31421/ijhs/27/2021/9865.