@article{CC_2006_35_4_a14,
     author = {Rocha, Eug\'enio A.M. and Torres, Delfim F.M.},
     title = {Quadratures of {Pontryagin} extremals for optimal control problems},
     journal = {Control and Cybernetics},
     pages = {947--963},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {2006},
     zbl = {1141.49022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2006_35_4_a14/}
}