Genetic transformation of Zucchini squash and Watermelon for resistance to Papaya ringspot virus - type W and Zucchini yellow mosaic virus - Stipp, L. C. L; Castelotti, L; Harakava, R; Rezende, Jorge Alberto Marques; Mendes, Beatriz Madalena Januzzi (Simpósio Brasileiro de Genética Molecular de Plantas, 2009)