Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1977__22_154481, author = {Harvey Wolff}, title = {On the {External} {Characterization} of {Topological} {Functors.}}, journal = {Manuscripta mathematica}, pages = {63--76}, publisher = {mathdoc}, volume = {22}, year = {1977}, zbl = {0365.18012}, url = {http://geodesic.mathdoc.fr/item/MM2_1977__22_154481/} }
Harvey Wolff. On the External Characterization of Topological Functors.. Manuscripta mathematica, Tome 22 (1977), pp. 63-76. http://geodesic.mathdoc.fr/item/MM2_1977__22_154481/