TY  - JOUR
AU  - S. Topa
TI  - Determination of differential concomitants of the first class of a pair of contravariant vectors in a two-dimensional space
JO  - Annales Polonici Mathematici
PY  - 1967
SP  - 343
EP  - 345
VL  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-19-3-343-345/
DO  - 10.4064/ap-19-3-343-345
LA  - en
ID  - 10_4064_ap_19_3_343_345
ER  -