@article{RMF_2007__82_3_a2,
     author = {Pokorn\'y, Ond\v{r}ej},
     title = {GPS: {Global} {Positioning} {System}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {11--17},
     publisher = {mathdoc},
     volume = {82},
     number = {3},
     year = {2007},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2007__82_3_a2/}
}