Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1970__45_139426, author = {M.A. Armstrong}, title = {Collars and {Concordances} of {Topological} {Manifolds.}}, journal = {Commentarii mathematici Helvetici}, pages = {119--128}, publisher = {mathdoc}, volume = {45}, year = {1970}, zbl = {0187.20602}, url = {http://geodesic.mathdoc.fr/item/CMH_1970__45_139426/} }
M.A. Armstrong. Collars and Concordances of Topological Manifolds.. Commentarii mathematici Helvetici, Tome 45 (1970), pp. 119-128. http://geodesic.mathdoc.fr/item/CMH_1970__45_139426/