@article{700579,
     title = {Remarks on separation axioms},
     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 = {1971},
     pages = {[265]-296},
     mrnumber = {MR0278259},
     zbl = {0234.54008},
     url = {http://dml.mathdoc.fr/item/700579}
}

Singal, Asha Rani. Remarks on separation axioms, dans General Topology and Its Relations to Modern Analysis and Algebra, GDML_Books,  (1971), pp. [265]-296. http://gdmltest.u-ga.fr/item/700579/