@article{DAN_1995_342_2_a8,
     author = {L. T. Ashchepkov and N. I. Baranchikova},
     title = {Criteria for the optimality of positional controls},
     journal = {Doklady Akademii Nauk},
     pages = {175--176},
     publisher = {mathdoc},
     volume = {342},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_342_2_a8/}
}