Structural and electrical characterization of TiO2 films grown by spray pyrolysisOja, Ilona; Mere, Arvo; Krunks, Malle; Nisumaa, Reet; Solterbeck, C.-H.; Es-Souni, M.Thin solid films2006 / p. 674-677 : ill https://www.sciencedirect.com/science/article/pii/S0040609005025708