@article{10_21136_CMJ_2021_0228_20,
     author = {Pokorn\'y, Du\v{s}an and Zaj{\'\i}\v{c}ek, Lud\v{e}k},
     title = {A characterization of sets in ${\mathbb R}^2$ with {DC} distance function},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1--38},
     publisher = {mathdoc},
     volume = {72},
     number = {1},
     year = {2022},
     doi = {10.21136/CMJ.2021.0228-20},
     mrnumber = {4389104},
     zbl = {07511551},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2021.0228-20/}
}