@article{700816,
title = {Symmetric approach to the fundamental notions of general topology},
booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
series = {GDML\_Books},
publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
address = {Praha},
year = {1967},
pages = {308-319},
mrnumber = {MR0232333},
zbl = {0168.43403},
url = {http://dml.mathdoc.fr/item/700816}
}
Schmidt, J. Symmetric approach to the fundamental notions of general topology, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books, (1967), pp. 308-319. http://gdmltest.u-ga.fr/item/700816/