@PhdthesisMisc{A74_917, author = {Anton K\"uhne}, title = {Ein Jacobi-Verfahren f\"ur normale Matrizen}, note = {Dis_no 5199, Prof. Dr. Peter Henrici}, school = {ETH Z{\"u}rich}, doi = {http://dx.doi.org/10.3929/ethz-a-000085778}, year = {1974} }