@article{1183740824, author = {Kopperman, R. D.}, title = {First-Order Topological Axioms}, journal = {J. Symbolic Logic}, volume = {46}, number = {1}, year = {1981}, pages = { 475-489}, language = {en}, url = {http://dml.mathdoc.fr/item/1183740824} }
Kopperman, R. D. First-Order Topological Axioms. J. Symbolic Logic, Tome 46 (1981) no. 1, pp. 475-489. http://gdmltest.u-ga.fr/item/1183740824/