A DFT study on small M-doped titanium (M = V, Fe, Ni) clusters: structures, chemical bonds and magnetic propertiesJ. G. Du, X. Y. Sun and G. JiangEur. Phys. J. D, 55 1 (2009) 111-120DOI: https://doi.org/10.1140/epjd/e2009-00177-6