@article{bwmeta1.element.desklight-a210b573-b1c4-4d00-8cc8-3c9149241ca7,
author = {Walter Benz},
title = {The n-point-invariants of the projective line and cross-ratios of n-tuples},
journal = {Annales Polonici Mathematici},
volume = {26},
year = {1972},
pages = {53-60},
zbl = {0207.19504},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-a210b573-b1c4-4d00-8cc8-3c9149241ca7}
}
Walter Benz. The n-point-invariants of the projective line and cross-ratios of n-tuples. Annales Polonici Mathematici, Tome 26 (1972) pp. 53-60. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-a210b573-b1c4-4d00-8cc8-3c9149241ca7/