Dabul, A. N. G. and Ayub, R. A. (2006) “Effects of promalin (6BA+GA4+7) on growth and development of apple fruits (Malus domestica, Borkh.) cv. Gala”, Semina: Ciências Agrárias, 27(2), pp. 199–204. doi: 10.5433/1679-0359.2006v27n2p199.