@article{DAN_1984_276_2_a10,
     author = {E. A. Semina},
     title = {The method of the alternating {Pontryagin} integral in linear},
     journal = {Doklady Akademii Nauk},
     pages = {299--302},
     publisher = {mathdoc},
     volume = {276},
     number = {2},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_276_2_a10/}
}