TY  - JOUR
AU  - Duda, Jaromír
TI  - Congruence restrictions on axes
JO  - Mathematica Bohemica
PY  - 1992
SP  - 251
EP  - 258
VL  - 117
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.1992.126285/
DO  - 10.21136/MB.1992.126285
LA  - en
ID  - 10_21136_MB_1992_126285
ER  -