@article{CMUC_1989__30_1_a17,
     author = {Ml\v{c}ek, Josef},
     title = {Combinatoric properties of classes in {AST}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {141--154},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1989},
     mrnumber = {995713},
     zbl = {0683.03035},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_1_a17/}
}