@article{MZM_1991_50_6_a9,
     author = {G. G. Magaril-Il'yaev and K. Yu. Osipenko},
     title = {Optimal recovery of functionals based on inaccurate data},
     journal = {Matemati\v{c}eskie zametki},
     pages = {85--93},
     publisher = {mathdoc},
     volume = {50},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1991_50_6_a9/}
}