p-electron magnetism in doped BaTiO3−xMx (M=C, N, B) C. Gruber, P. O. Bedolla-Velazquez, J. Redinger, P. Mohn and M. Marsman EPL, 97 6 (2012) 67008 Published online: 21 March 2012 DOI: 10.1209/0295-5075/97/67008