@article{KYB_1971__7_1_a2, author = {\v{Z}ampa, Pavel}, title = {On some properties of dynamical systems}, journal = {Kybernetika}, pages = {--37}, publisher = {mathdoc}, volume = {07}, number = {1}, year = {1971}, mrnumber = {0297426}, zbl = {0229.34045}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1971__7_1_a2/} }