@article{700618,
     title = {Recent results on superextensions},
     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 = {[279]-283},
     mrnumber = {MR0644646},
     zbl = {0372.54022},
     url = {http://dml.mathdoc.fr/item/700618}
}

van Mill, Jan. Recent results on superextensions, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. [279]-283. http://gdmltest.u-ga.fr/item/700618/