TY - JOUR DA - 1986 LA - eng IS - 1 M2 - 69 PY - 1986 SN - 0032-5155 SP - 69-76 T2 - Portugaliae Mathematica TI - Perturbation theorems for the matrix eigenvalue problem UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-6579 Y2 - 2024-11-22T07:12:44 ER -