@article{CMUC_1980_21_3_a19,
     author = {Hu\v{s}ek, Miroslav},
     title = {Some sequential properties},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {627--628},
     year = {1980},
     volume = {21},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1980_21_3_a19/}
}