Impact of S doping on the structural, electronic and magnetic properties of Crn (n = 2 − 6) clusters Rachid Mecheref, Said Bouarab, Mourad Zemirli and Andrés Vega Eur. Phys. J. D, 71 4 (2017) 90 Published online: 13 April 2017 DOI: 10.1140/epjd/e2017-70587-x