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Series formelles non commutatives et automatique non linĂ©aire. (French) Zbl 0412.93039
Series formelles en variables non commutatives et applications, Actes 5ieme Ec. de Printemps d’Inf. theor., Vieux-Boucau les Bains 1977, 69-118 (1978).

MSC:
93C10 Nonlinear systems in control theory
93C99 Model systems in control theory
93B99 Controllability, observability, and system structure