1. Grassmann algebras as Hilbert space;de Pillis;J. of Algebra,1968
2. Transformations on partitioned matrices;de Pillis;Duke Math. J.,1969
3. The Use of Multilinear Algebra for Proving Matrix Inequalities;Marcus,1961
4. A Survey of Matrix Theory and Matrix Inequalities;Marcus,1964
5. Fundamental Structures of Algebra;Mostow,1963