by Béla Sz.-Nagy and Ciprian Foiaş

North-Holland Pub. Co. 1970 American Elsevier

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[by] Ion Colojoara and Ciprian Foias

Gordon and Breach c1968 Mathematics and its applications v. 9

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par Béla Sz.-Nagy et Ciprian Foiaş

Masson c1967

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par Béla Sz.-Nagy et Ciprian Foiaş

Akadémiai Kiadó c1967

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expuneri ţinute de C. Foiaș

Editura Academiei Republicii Populare Romîne [1962] Seminar M. Nicolescu 1959-1960

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