@article{10_21136_CMJ_1990_102373,
     author = {Nadzieja, Tadek},
     title = {Construction of a smooth {Lyapunov} function for an asymptotically stable set},
     journal = {Czechoslovak Mathematical Journal},
     pages = {195--199},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {1990},
     doi = {10.21136/CMJ.1990.102373},
     mrnumber = {1046287},
     zbl = {0714.58028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1990.102373/}
}