@article{DAN_1990_314_2_a6,
     author = {A. B. Kurzhanskii and I. F. Sivergina},
     title = {Irreversible evolution systems: guaranteed estimation and},
     journal = {Doklady Akademii Nauk},
     pages = {292--296},
     publisher = {mathdoc},
     volume = {314},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_2_a6/}
}