@article{01702491,
title = {Riemann-Lagrange geometrical background for multi-time physical fields.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {6},
year = {2001},
pages = {49-70},
zbl = {0998.53014},
language = {en},
url = {http://dml.mathdoc.fr/item/01702491}
}
Neagu, Mircea. Riemann-Lagrange geometrical background for multi-time physical fields.. Balkan Journal of Geometry and its Applications (BJGA), Tome 6 (2001) pp. 49-70. http://gdmltest.u-ga.fr/item/01702491/