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European Consort. Math. Indust., Teubner (Stuttgart)
Workshop Operators, Systems, and Linear Algebra: Three Decades of Algebraic Systems Theory

Schumacher, H. (1997). Linear systems and discontinuous dynamics. In Operators, systems, and linear algebra : three decades of algebraic systems theory (pp. 182–195). European Consort. Math. Indust., Teubner (Stuttgart).