%0 Journal Article %A Sahin, Recep %A Koruoğlu, Özden %T Commutator subgroups of the power subgroups of Hecke groups $ H({\lambda }_{q})$ II %J Comptes Rendus. Mathématique %D 2011 %P 127-130 %V 349 %N 3-4 %I Elsevier %U http://archive.numdam.org/articles/10.1016/j.crma.2011.01.003/ %R 10.1016/j.crma.2011.01.003 %G en %F CRMATH_2011__349_3-4_127_0