@article{MZ_1976__151_172449,
     author = {Gilbert Baumslag and Robert Bieri},
     title = {Constructable {Solvable} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {249--258},
     publisher = {mathdoc},
     volume = {151},
     year = {1976},
     zbl = {0356.20028},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__151_172449/}
}