TY  - JOUR
AU  - Janyška, Josef
TI  - On linear functions on the sphere $S^2$
JO  - Czechoslovak Mathematical Journal
PY  - 1981
SP  - 75
EP  - 82
VL  - 31
IS  - 1
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1981.101724/
DO  - 10.21136/CMJ.1981.101724
LA  - en
ID  - 10_21136_CMJ_1981_101724
ER  -