@article{AM2_1969__2_182349,
     author = {D. LOVELOCK},
     title = {Divergence-Free {Tensorial} {Concomitants} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {394--395},
     publisher = {mathdoc},
     volume = {2},
     year = {1969},
     url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182349/}
}