@article{DAN_1996_346_5_a6,
     author = {V. A. Brusin},
     title = {Frequency conditions in problems of $H^\infty$-control and of absolute stabilization},
     journal = {Doklady Akademii Nauk},
     pages = {603--605},
     publisher = {mathdoc},
     volume = {346},
     number = {5},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_346_5_a6/}
}