%0 Journal Article %A Grzegorz Gromadzki %A Michal Stukow %T Involving symmetries of Riemann surfaces to a study of the mapping class group. %J Publicacions Matemàtiques %D 2004 %P 103-106 %V 48 %N 1 %U https://geodesic-test.mathdoc.fr/item/PMATES_2004__48_1_41491/ %G en %F PMATES_2004__48_1_41491