TY  - JOUR
AU  - Zelinka, Bohdan
TI  - Polar graphs and railway traffic
JO  - Applications of Mathematics
PY  - 1974
SP  - 169
EP  - 176
VL  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/AM.1974.103527/
DO  - 10.21136/AM.1974.103527
LA  - en
ID  - 10_21136_AM_1974_103527
ER  -