TY  - JOUR
AU  - S. Topa
TI  - On a generalization of the functional equation for the harmonic ratio of four points on a projective line over an arbitrary commutative field
JO  - Annales Polonici Mathematici
PY  - 1970
SP  - 65
EP  - 72
VL  - 23
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-23-1-65-72/
DO  - 10.4064/ap-23-1-65-72
LA  - en
ID  - 10_4064_ap_23_1_65_72
ER  -