\input zb-basic \input zb-ioport \iteman{io-port 03763180} \itemau{Brebner, M.A.; Grad, J.} \itemti{Eigenvalues of Ax=lambdaBx for real symmetric matrices A and B computed by reduction to a pseudosymmetric form and the HR process.} \itemso{Linear Algebra Appl. 43, 99-118 (1982).} \itemcc{} \itemut{real symmetric matrices; reduction; generalized eigenvalue problem; pseudosymmetric matrix; iterative HR process} \itemli{doi:10.1016/0024-3795(82)90246-4} \end