@article{1183486923,
author = {Nelson, A. L.},
title = {The conditions for a fixed point in projective differential geometry},
journal = {Bull. Amer. Math. Soc.},
volume = {32},
number = {5},
year = {1926},
pages = { 165-168},
language = {en},
url = {http://dml.mathdoc.fr/item/1183486923}
}
Nelson, A. L. The conditions for a fixed point in projective differential geometry. Bull. Amer. Math. Soc., Tome 32 (1926) no. 5, pp. 165-168. http://gdmltest.u-ga.fr/item/1183486923/