@article{DE_1971_7_3_a1,
     author = {S. Daiovich},
     title = {The optimal processes in linear systems that do not satisfy the nondegeneracy condition},
     journal = {Differencialʹnye uravneni\^a},
     pages = {391--396},
     publisher = {mathdoc},
     volume = {7},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_3_a1/}
}