1. Shorted operators;Anderson;SIAM J. Appl. Math.,1971
2. Series and parallel addition of matrices;Anderson;J. Math. Anal. Appl.,1969
3. Shorted operators, II;Anderson;SIAM J. Appl. Math.,1975
4. Topics on operator inequalities;Ando;Lecture Note,1978
5. Inequalities;Beckenbach,1961