THE D-STABILITY PROBLEM FOR 4 × 4 REAL MATRICES
Serkan T. Impram, Russell Johnson, Raffaella Pavani · Archivum Mathematicum · 2005
We give detailed discussion of a procedure for determining the robust D-stability of a 4 ×4 real matrix. The procedure begins from the Hur- witz stability criterion. The procedure is applied to two numerical examples.