@article{05237454,
title = {Necessary conditions of optimality for second-order nonlinear impulsive differential equations.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2007},
year = {2007},
doi = {10.1155/2007/40160},
zbl = {1140.49018},
language = {en},
url = {http://dml.mathdoc.fr/item/05237454}
}
Peng, Y.; Xiang, X.; Wei, W. Necessary conditions of optimality for second-order nonlinear impulsive differential equations.. Advances in Difference Equations [electronic only], Tome 2007 (2007) . doi : 10.1155/2007/40160. http://gdmltest.u-ga.fr/item/05237454/