@article{ND_2023_19_1_a2,
     author = {A. M. Tsirlin},
     title = {Methods of {Simplifying} {Optimal} {Control} {Problems,
}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {35--48},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2023_19_1_a2/}
}