@article{MM2_1977__22_154478,
     author = {Karl Sigmund},
     title = {On the {Connectedness} of {Ergodic} {Systems.}},
     journal = {Manuscripta mathematica},
     pages = {27--32},
     publisher = {mathdoc},
     volume = {22},
     year = {1977},
     zbl = {0365.28014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1977__22_154478/}
}