1. A simplified Schur-Cohn test;Anderson;IEEE Trans. Automat. Contr.,1973
2. Generalized Bezoutian and Sylvester matrices in multivariable linear control;Anderson;IEEE Trans. Automat. Contr.,1976
3. Inners and Sc nur Complement;Barnett;Linear Aljebra and Its Applications,1978
4. A generalization of the Schur-Complement by means of the Moore-Penrose inverse.;Carlson;SIAM J. Appl. Math.,1972
5. Uber die Anzahl der Wurzeln einer algebraischen Gleichung in einem Kreise;Cohn;Math. Z.,1914