Effects of hydrocarbon contamination on ozone generation with dielectric barrier discharges Jose L. Lopez, Guido Vezzu, Alfred Freilich and Bernhard Paolini Eur. Phys. J. D, 67 8 (2013) 180 Published online: 19 August 2013 DOI: 10.1140/epjd/e2013-40126-2