Physical meaning and measurement of the entropic parameter q in an inhomogeneous magnetic systems M. S. Reis, V. S. Amaral, R. S. Sarthour and I. S. Oliveira Eur. Phys. J. B, 50 1-2 (2006) 99-103 Published online: 20 February 2006 DOI: 10.1140/epjb/e2006-00065-5