Stoichiometry analysis of titanium oxide coating by LIBS H. Estupiñán, D. Y. Peña, Y. O. García, R. Cabanzo and E. Mejía-Ospino Eur. Phys. J. D, 53 1 (2009) 69-73 Published online: 13 February 2009 DOI: 10.1140/epjd/e2009-00030-0