@article{10_1017_S0017089516000070,
     author = {BELLINGERI, PAOLO and GODELLE, EDDY and GUASCHI, JOHN},
     title = {ABELIAN {AND} {METABELIAN} {QUOTIENT} {GROUPS} {OF} {SURFACE} {BRAID} {GROUPS}},
     journal = {Glasgow mathematical journal},
     pages = {119--142},
     year = {2017},
     volume = {59},
     number = {1},
     doi = {10.1017/S0017089516000070},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089516000070/}
}