N. Theodorou

Stability tests for 2-D systems using the Schwarz form and the inners determinants

Spyros G. Tzafestas, A. Kanellakis, S. Tzafestas, 1991 .

Recent advances in the stability analysis of multidimensional systems

Spyros G. Tzafestas, A. Kanellakis, N. Theodorou, 1988 .

Computation of the stability margin of two-dimensional discrete systems

Spyros G. Tzafestas, A. Kanellakis, S. Tzafestas, 1992 .