Matrices with prescribed similarity class and a prescribed nonprincipal submatrix Silva, Fernando C. — 1990 Portugaliae mathematica
Matrices with prescribed characteristic polynomial and submatrices Silva, Fernando C. — 1987 Portugaliae mathematica
An additive inverse characteristic polynomial theorem Silva, Fernando C. — 1990 Portugaliae mathematica
Controllability indices of partially prescribed pairs of matrices. Cabral, Isabel; Silva, Fernando C. — 1995 Portugaliae Mathematica
On the characteristic polynomial of matrices with prescribed columns and the stabilization and observability of linear systems. Furtado, Susana; Silva, Fernando C. — 1998 ELA. The Electronic Journal of Linear Algebra [electronic only]