@article{05052087,
title = {Mechanical Lagrangian systems with external forces.},
journal = {APPS. Applied Sciences},
volume = {8},
year = {2006},
pages = {132-137},
zbl = {1099.70014},
language = {en},
url = {http://dml.mathdoc.fr/item/05052087}
}
Nimineţ, Valer. Mechanical Lagrangian systems with external forces.. APPS. Applied Sciences, Tome 8 (2006) pp. 132-137. http://gdmltest.u-ga.fr/item/05052087/