On the validity of the electron transfer model in photon emission from ion bombarded vanadium surfacesM. Ait El Fqih, A. El Boujlaïdi, R. Jourdani and A. KaddouriEur. Phys. J. D, 63 1 (2011) 97-102DOI: https://doi.org/10.1140/epjd/e2011-10614-6