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@article{NUMA_1990__57_6-7_133476, author = {W.B. Gragg and L. Reichel}, title = {A {Divide} and {Conquer} {Method} for {Unitary} and {Orthogonal} {Eigenproblems.}}, journal = {Numerische Mathematik}, pages = {695--718}, publisher = {mathdoc}, volume = {57}, number = {6-7}, year = {1990}, zbl = {0708.65039}, url = {http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133476/} }
W.B. Gragg; L. Reichel. A Divide and Conquer Method for Unitary and Orthogonal Eigenproblems.. Numerische Mathematik, Tome 57 (1990) no. 6-7, pp. 695-718. http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133476/