@article{CMUC_1986__27_4_a17,
     author = {Bella, Angelo},
     title = {On set tightness and $T$-tightness},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {805--814},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {1986},
     mrnumber = {874674},
     zbl = {0602.54005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1986__27_4_a17/}
}