@article{IM2_1998_62_4_a0,
     author = {E. I. Berezhnoi and V. I. Burenkov},
     title = {Improved interpolation theorems for a~class of linear operators},
     journal = {Izvestiya. Mathematics },
     pages = {651--671},
     publisher = {mathdoc},
     volume = {62},
     number = {4},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1998_62_4_a0/}
}