TY  - JOUR
AU  - Walter Benz
TI  - The n-point-invariants of the projective line and cross-ratios of n-tuples
JO  - Annales Polonici Mathematici
PY  - 1972
SP  - 53
EP  - 60
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-26-1-53-60/
DO  - 10.4064/ap-26-1-53-60
LA  - en
ID  - 10_4064_ap_26_1_53_60
ER  -