@article{SM_1992_71_2_a15,
     author = {K. Kh. Boimatov and A. G. Kostyuchenko},
     title = {Spectral asymptotics of nonselfadjoint elliptic systems of differential operators on bounded domains},
     journal = {Sbornik. Mathematics},
     pages = {517--531},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_71_2_a15/}
}