Models based on Mittag-Leffler functions for anomalous relaxation in dielectrics E. Capelas de Oliveira, F. Mainardi and J. Vaz Jr. Eur. Phys. J. Special Topics, 193 (2011) 161-171 Published online: 04 April 2011 DOI: 10.1140/epjst/e2011-01388-0