%0 Journal Article %A Francesca Aicardi %T Empirical estimates of the average orders of orbits period lengths in Euler groups %J Comptes Rendus. Mathématique %D 2004 %P 15-20 %V 339 %N 1 %I Elsevier %R 10.1016/j.crma.2004.02.021 %G en %F CRMATH_2004__339_1_15_0