@article{MZM_1998_63_6_a7,
     author = {V. I. Ovchinnikov},
     title = {Coherent trace-class operators in {Hilbert} couples},
     journal = {Matemati\v{c}eskie zametki},
     pages = {866--872},
     publisher = {mathdoc},
     volume = {63},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_63_6_a7/}
}