Magnetic collapse of a neutron gas: Can magnetars indeed be formed? A. Pérez Martínez, H. Pérez Rojas and H. J. Mosquera Cuesta Eur. Phys. J. C, 29 1 (2003) 111-123 Published online: 05 May 2003 DOI: 10.1140/epjc/s2003-01192-6