@article{700598,
     title = {Weakly Hausdorff spaces and the cardinality of topological spaces},
     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 = {301-306},
     mrnumber = {MR0283746},
     zbl = {0239.54005},
     url = {http://dml.mathdoc.fr/item/700598}
}

Soundararajan, T. Weakly Hausdorff spaces and the cardinality of topological spaces, dans General Topology and Its Relations to Modern Analysis and Algebra, GDML_Books,  (1971), pp. 301-306. http://gdmltest.u-ga.fr/item/700598/