@article{JAC_2009__29_3_a2,
     author = {Breda D'Azevedo, Antonio and Jones, Gareth and Nedela, Roman and \v{S}koviera, Martin},
     title = {Chirality groups of maps and hypermaps},
     journal = {Journal of Algebraic Combinatorics},
     pages = {337--355},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2009__29_3_a2/}
}