@article{RMF_2021__96_3_a2,
     author = {Dlab, Vlastimil},
     title = {A {Closer} {Look} at the {Clock}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {32--41},
     publisher = {mathdoc},
     volume = {96},
     number = {3},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMF_2021__96_3_a2/}
}