Spectral asymptotics of nonselfadjoint elliptic systems of differential operators on bounded domains

In a bounded domain $\Omega\subset R_n$ with smooth boundary, a matrix elliptic differential operator $A$ is considered. It is assumed that the eigenvalues of the symbol of $A$ lie on the positive semiaxis $R^+$ and outside the angle $\Phi=\{z\colon\left|\arg z\right|\leqslant\varphi\}$, $\varphi\in(0,\pi)$.