@article{700725,
     title = {A categorical generalization of completely Hausdorff 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 = {1972},
     pages = {361-362},
     mrnumber = {MR0353252},
     zbl = {0311.54033},
     url = {http://dml.mathdoc.fr/item/700725}
}

Preuss, G. A categorical generalization of completely Hausdorff spaces, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 361-362. http://gdmltest.u-ga.fr/item/700725/