@article{DAN_1995_341_4_a7,
     author = {Ya. Z. Tsypkin and B. T. Polyak},
     title = {Robust stability of a class of systems with distributed},
     journal = {Doklady Akademii Nauk},
     pages = {463--465},
     publisher = {mathdoc},
     volume = {341},
     number = {4},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_341_4_a7/}
}