Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MT_1996_30_a10, author = {V. A. Churkin}, title = {Wide ends of finitely-generated groups}, journal = {Matemati\v{c}eskie trudy}, pages = {186--188}, publisher = {mathdoc}, volume = {30}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_1996_30_a10/} }
V. A. Churkin. Wide ends of finitely-generated groups. Matematičeskie trudy, Tome 30 (1996), pp. 186-188. http://geodesic.mathdoc.fr/item/MT_1996_30_a10/