author = "Pedro Santos and Maria Am{\'e}lia Bastos and Cl{\'a}udio Fernandes",
   title = "Introdu{\c c}{\~a}o {\`a}s √Ālgebras de Operadores",
   publisher = "IST - Press",
   year = 2021,
   BibTexOrigem = "17434 www.Inesc-ID.pt 2023-06-07"

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