Lévy sections vs. partial sums of heteroscedastic time series C. M. Nascimento, E. L. S. Helena, F. S. Passos, I. Gleria, A. Figueiredo and G. M. Viswanathan EPL, 96 6 (2011) 68004 Published online: 06 December 2011 DOI: 10.1209/0295-5075/96/68004