A necessary and sufficient condition for stability of the convex combination of polynomials Stanisław Białas — 2004 Control and Cybernetics
A sufficient condition for Hurwitz stability of the convex combination of two matrices Stanisław Białas — 2004 Control and Cybernetics
Schur stability of the convex combination of complex polynomials Stanisław Białas; Małgorzata Białas — 2010 Control and Cybernetics