Multifractal detrented fluctuation analysis of tonic-clonic epileptic seizures A. Figliola, E. Serrano and O. A. Rosso Eur. Phys. J. Special Topics, 143 (2007) 117-123 Published online: 12 May 2007 DOI: 10.1140/epjst/e2007-00079-9