[n] S. Feigh, M. Clemens, R. Schuhmann, and T. Weiland, “Preconditioned Jacobi-Davidson Algorithm for Nonsymmetric, Complex Eigenvalue Problems arising with Gyrotropic Materials in Resonator Cavities”, in Proc. EPAC'02, Paris, France, Jun. 2002, paper WEPRI078, pp. 1625-1627.
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