@masterthesis{3198078, title = "Boundary Actions and C*-Algebraic Properties of Discrete Groups", authorField = "Πετράκος, Σπυρίδων", year = "2022", school = "ΠΜΣ Μαθηματικά, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών" }