Silva, Rui Jorge C., Francisco Manuel Braz Fernandes, LuÍs Pereira, António Marques, Isabel Ferreira, Rodrigo Martins, Hugo Águas, Elvira Fortunato, V. Assunção, and Alexandra Gonçalves. "ZnO: Ga thin films produced by RF sputtering at room temperature: Effect of the power density." Materials Science Forum. 455 (2004): 12-15.