@article{1183528866, author = {de Groot, J.}, title = {An isomorphism principle in general topology}, journal = {Bull. Amer. Math. Soc.}, volume = {73}, number = {6}, year = {1967}, pages = { 465-467}, language = {en}, url = {http://dml.mathdoc.fr/item/1183528866} }
de Groot, J. An isomorphism principle in general topology. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 465-467. http://gdmltest.u-ga.fr/item/1183528866/