@article{EMJ_2021_12_4_a2,
     author = {A. Hammoudi and M. Benharrat},
     title = {On the relation between two approaches to exterior penalty method for constrained optimal control problems},
     journal = {Eurasian mathematical journal},
     pages = {21--42},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2021_12_4_a2/}
}