@article{700675,
     title = {On a problem of Kat\v etov},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {[494]-499},
     mrnumber = {MR0464156},
     zbl = {0375.54015},
     url = {http://dml.mathdoc.fr/item/700675}
}

Wage, M. L. On a problem of Katětov, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. [494]-499. http://gdmltest.u-ga.fr/item/700675/