@article{700936,
     title = {Modifications of topologies},
     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 = {1962},
     pages = {[254]-256},
     mrnumber = {MR0177381},
     zbl = {0138.17302},
     url = {http://dml.mathdoc.fr/item/700936}
}

Koutský, K.; Sekanina, M. Modifications of topologies, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1962), pp. [254]-256. http://gdmltest.u-ga.fr/item/700936/