@article{10_57016_TM_DVLA5418,
     author = {Johann Davidov},
     title = {Smoothness of the signed distance function: {A} simple proof},
     journal = {The Teaching of Mathematics},
     pages = {14 },
     publisher = {mathdoc},
     volume = {XXVI},
     number = {1},
     year = {2023},
     doi = {10.57016/TM-DVLA5418},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.57016/TM-DVLA5418/}
}