%0 Journal Article %A Lihová, Judita %T About the first and the second constellations belonging to the topology $u$ %J Archivum mathematicum %D 1972 %P 17-33 %V 08 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1972__8_1_a1/ %G en %F ARM_1972__8_1_a1