Enhanced gas sensing correlated with structural and optical properties of Cs-loaded SnO2 nanofilmsP. J. Elia Raine, P. Arun George, O. N. Balasundaram and T. VargheseEur. Phys. J. Plus, 131 9 (2016) 324DOI: https://doi.org/10.1140/epjp/i2016-16324-y