@article{GDZPPN002350718,
title = {Conformality and Pseudo-Riemannian Manifolds.},
journal = {Mathematica Scandinavica},
volume = {28},
year = {1971},
pages = {45-69},
zbl = {0221.31005},
url = {http://dml.mathdoc.fr/item/GDZPPN002350718}
}
Lawrynowicz, J.; Waliszewski, W. Conformality and Pseudo-Riemannian Manifolds.. Mathematica Scandinavica, Tome 28 (1971) pp. 45-69. http://gdmltest.u-ga.fr/item/GDZPPN002350718/