TY  - JOUR
AU  - Jussi Väisälä
TI  - On the null-sets for extremal distances
JO  - Annales Fennici Mathematici
PY  - 1963
VL  - 316-335
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1963.322/
DO  - 10.5186/aasfm.1963.322
LA  - en
ID  - AFM_1963_316-335_a13
ER  -