Structural and optical properties of vanadium and hafnium nitride nanoscale films: effect of stoichiometryH. Gueddaoui, S. Maabed, G. Schmerber, M. Guemmaz and J. C. ParlebasEur. Phys. J. B, 60 3 (2007) 305-312DOI: https://doi.org/10.1140/epjb/e2007-00350-9