@article{DAN_1980_254_1_a6,
     author = {A. N. Kozhevnikov},
     title = {An estimate of the remainder in the asymptotics of the spectrum and complex powers of systems elliptic in the sense of {Douglis} and {Nirenberg}},
     journal = {Doklady Akademii Nauk},
     pages = {32--35},
     publisher = {mathdoc},
     volume = {254},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_1_a6/}
}