@article{CMUC_2007__48_3_a7,
     author = {Garc{\'\i}a-Ferreira, S. and Sanchis, M.},
     title = {Ultrafilter-limit points in metric dynamical systems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {465--485},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {2007},
     mrnumber = {2374128},
     zbl = {1199.54194},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2007__48_3_a7/}
}