@article{CRMATH_2011__349_3-4_127_0,
     author = {Recep Sahin and \"Ozden Koruo\u{g}lu},
     title = {Commutator subgroups of the power subgroups of {Hecke} groups $ H({\lambda }_{q})$ {II}},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {127--130},
     publisher = {Elsevier},
     volume = {349},
     number = {3-4},
     year = {2011},
     doi = {10.1016/j.crma.2011.01.003},
     language = {en},
}