@article{700644,
     title = {Some questions related to hyperspaces},
     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 = {[276]-278},
     mrnumber = {MR0514977},
     zbl = {0371.54020},
     url = {http://dml.mathdoc.fr/item/700644}
}

Marjanović, M. M. Some questions related to hyperspaces, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. [276]-278. http://gdmltest.u-ga.fr/item/700644/