@article{IIGUM_2010_3_3_a1,
     author = {V. G. Antonik},
     title = {Methods of non-local improvement in non-convex optimal control problems of special kind},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {21--27},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2010_3_3_a1/}
}