On Two Distributions of Subgroups of Free Groups. - Frédérique Bassino; Armando Martino; Cyril Nicaud; Enric Ventura; Pascal Weil (ANALCO, 2010)

Statistical properties of subgroups of free groups. - Frédérique Bassino; Armando Martino; Cyril Nicaud; Enric Ventura; Pascal Weil (Random Struct. Algorithms, 2013)