@masterthesis{2898647, title = "Discrete time convolutions and elements of Markov renewal theory", authorField = "Κορδαλής, Λεωνίδας", year = "2020", school = "ΠΜΣ Μαθηματικά, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών" }