Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1976__151_172441, author = {Heiner Zieschang}, title = {On {Decomposititons} of {Discontinuous} {Groups} of the {Plane.}}, journal = {Mathematische Zeitschrift}, pages = {165--188}, publisher = {mathdoc}, volume = {151}, year = {1976}, zbl = {0324.50035}, url = {http://geodesic.mathdoc.fr/item/MZ_1976__151_172441/} }
Heiner Zieschang. On Decomposititons of Discontinuous Groups of the Plane.. Mathematische Zeitschrift, Tome 151 (1976), pp. 165-188. http://geodesic.mathdoc.fr/item/MZ_1976__151_172441/