@article{SMJ2_2003_29_3_a2,
     author = {Sz\'az, \'Arp\'ad},
     title = {Upper and {Lower} {Bounds} in {Relator} {Spaces}},
     journal = {Serdica Mathematical Journal},
     pages = {239--270},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2003_29_3_a2/}
}