@article{GDZPPN00254959X,
title = {Divergence-Free Tensorial Concomitants (Short Communication)},
journal = {Aequationes mathematicae},
volume = {2},
year = {1969},
pages = {394-395},
url = {http://dml.mathdoc.fr/item/GDZPPN00254959X}
}
LOVELOCK, D. Divergence-Free Tensorial Concomitants (Short Communication). Aequationes mathematicae, Tome 2 (1969) pp. 394-395. http://gdmltest.u-ga.fr/item/GDZPPN00254959X/