O'Brien, Shane, Mehmet \c{C}opuroglu, Paul Tassie, Mark G. Nolan, Jeff A. Hamilton, Ian Povey, Luis Pereira, Rodrigo Martins, Elvira Fortunato, and Martyn E. Pemble. "{The effect of dopants on the morphology, microstructure and electrical properties of transparent zinc oxide films prepared by the sol-gel method}." Thin Solid Films. 520 (2011): 1174-1177.