@article{CMUC_1990__31_2_a8,
     author = {Pol\'a\v{c}ik, Peter},
     title = {Existence of unstable sets for invariant sets in compact semiflows. {Applications} in order-preserving semiflows},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {263--276},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1990},
     mrnumber = {1077897},
     zbl = {0724.58054},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a8/}
}