Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1957__32_139147, author = {C.D. Papakyriakopoulos}, title = {On the {Ends} of the {Fundamental} {Groups} of {3-Manifolds} with {Boundary.}}, journal = {Commentarii mathematici Helvetici}, pages = {85--92}, publisher = {mathdoc}, volume = {32}, year = {1957}, zbl = {0080.16805}, url = {http://geodesic.mathdoc.fr/item/CMH_1957__32_139147/} }
C.D. Papakyriakopoulos. On the Ends of the Fundamental Groups of 3-Manifolds with Boundary.. Commentarii mathematici Helvetici, Tome 32 (1957), pp. 85-92. http://geodesic.mathdoc.fr/item/CMH_1957__32_139147/