@article{PA_1997_4_a3,
     author = {Yu. V. Zaika and M. M. Kruchek},
     title = {Suboptimal integral observation operators in dynamical systems with delay},
     journal = {Problemy analiza},
     pages = {62--75},
     publisher = {mathdoc},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PA_1997_4_a3/}
}