@article{700634,
     title = {Problem},
     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 = {[62]-[62]},
     mrnumber = {MR0474224},
     url = {http://dml.mathdoc.fr/item/700634}
}

Borsuk, K. Problem, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), p. [62]. http://gdmltest.u-ga.fr/item/700634/