TY  - JOUR
AU  - Johann Davidov
TI  - Smoothness of the signed distance function: A simple proof
JO  - The Teaching of Mathematics
PY  - 2023
SP  - 14 
VL  - XXVI
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.57016/TM-DVLA5418/
DO  - 10.57016/TM-DVLA5418
LA  - en
ID  - 10_57016_TM_DVLA5418
ER  -