@article{01663730, title = {Sufficient conditions for Lagrange, Mayer, and Bolza optimization problems.}, journal = {Mathematical Problems in Engineering}, volume = {7}, year = {2001}, pages = {177-203}, doi = {10.1155/S1024123X01001600}, zbl = {1021.49017}, language = {en}, url = {http://dml.mathdoc.fr/item/01663730} }
Boltyanski, V. Sufficient conditions for Lagrange, Mayer, and Bolza optimization problems.. Mathematical Problems in Engineering, Tome 7 (2001) pp. 177-203. doi : 10.1155/S1024123X01001600. http://gdmltest.u-ga.fr/item/01663730/