@article{RM_1990_45_5_a5,
     author = {D. F. Abdullaeva and K. Kh. Boimatov},
     title = {Spectral asymptotics of non-self-adjoint elliptic operators in $\mathbb R^n$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {217--218},
     publisher = {mathdoc},
     volume = {45},
     number = {5},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1990_45_5_a5/}
}