@article{10_4153_CMB_1991_011_x,
     author = {Gromadzki, Grzegorz},
     title = {On {Soluble} {Groups} of {Automorphism} of {Riemann} {Surfaces}},
     journal = {Canadian mathematical bulletin},
     pages = {67--73},
     year = {1991},
     volume = {34},
     number = {1},
     doi = {10.4153/CMB-1991-011-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-011-x/}
}