Effect of the titanium isopropoxide : acetylacetone molar ratio on the photocatalytic activity of TiO2 thin films : [conference paper]Spiridonova, Jekaterina; Katerski, Atanas; Danilson, Mati; Kritševskaja, Marina; Krunks, Malle; Oja Acik, IlonaGSFMT Scientific Conference 2020 : Tallinn, February 4-5, 2020 : abstracts2020 / p. 78 http://fmtdk.ut.ee/wp-content/uploads/2020/01/GSFMT2020.pdf