@article{GDZPPN002305550,
title = {Geometry of Manifolds which Admit Conservation Laws, II.},
journal = {Mathematische Annalen},
volume = {193},
year = {1971},
pages = {167-179},
zbl = {0209.53303},
url = {http://dml.mathdoc.fr/item/GDZPPN002305550}
}
BLAIR, D.E.; STONE, A.,P. Geometry of Manifolds which Admit Conservation Laws, II.. Mathematische Annalen, Tome 193 (1971) pp. 167-179. http://gdmltest.u-ga.fr/item/GDZPPN002305550/