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@article{PIM_1989_N_S_45_59_a20, author = {Vladimir Jankovi\'c}, title = {The {Linear} {Optimal} {Control} {Problem} with {Variable} {Endpoints}}, journal = {Publications de l'Institut Math\'ematique}, pages = {133 }, publisher = {mathdoc}, volume = {_N_S_45}, number = {59}, year = {1989}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1989_N_S_45_59_a20/} }
Vladimir Janković. The Linear Optimal Control Problem with Variable Endpoints. Publications de l'Institut Mathématique, _N_S_45 (1989) no. 59, p. 133 . http://geodesic.mathdoc.fr/item/PIM_1989_N_S_45_59_a20/