@article{2431, author = {Hammer, Preston C.}, title = {Extended topology: continuity - I}, journal = {Portugaliae mathematica}, volume = {23}, year = {1964}, pages = {77-93}, zbl = {0151.29302}, mrnumber = {0210058}, language = {en}, url = {http://dml.mathdoc.fr/item/2431} }
Hammer, Preston C. Extended topology: continuity - I. Portugaliae mathematica, Tome 23 (1964) pp. 77-93. http://gdmltest.u-ga.fr/item/2431/