@article{DE_1998_34_3_a13,
     author = {V. P. Shutyaev},
     title = {On data assimilation in a scale of {Hilbert} spaces for quasilinear evolution problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {383--389},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_3_a13/}
}