@article{TUW-113843, author = {Karner, Herbert and Schneid, Josef and {\"U}berhuber, Christoph}, title = {{S}pectral {D}ecomposition of {R}eal {C}irculant {M}atrices }, journal = {{L}inear {A}lgebra and its {A}pplications}, year = {2003}, volume = {367}, pages = {301--311} }