@article{KYB_1971_7_1_a2,
     author = {\v{Z}ampa, Pavel},
     title = {On some properties of dynamical systems},
     journal = {Kybernetika},
     pages = {22--37},
     year = {1971},
     volume = {7},
     number = {1},
     mrnumber = {0297426},
     zbl = {0229.34045},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1971_7_1_a2/}
}