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Ampomah-Dwamena, Charles, Nicky Driedonks, David Lewis, Maria Shumskaya, Xiuyin Chen, Eleanore T. Wurtzel, Richard V. Espley, i Andrew C. Allan. "The Phytoene Synthase Gene Family of Apple (Malus X Domestica) and Its Role in Controlling Fruit Carotenoid Content." BMC Plant Biol 2015.

Ampomah-Dwamena, Charles, et al. "The Phytoene Synthase Gene Family of Apple (Malus X Domestica) and Its Role in Controlling Fruit Carotenoid Content." BMC Plant Biol 2015.