A minimum-phase FIR complex filter design for transmultiplexer implementation. - Enrico Del Re; Pier Luigi Emiliani; Damiano F. Maffucci (ICASSP, 1982)

A new speech signal scrambling method for secure communications: theory, implementation, and security evaluation. - Enrico Del Re; Romano Fantacci; Damiano F. Maffucci (IEEE J. Sel. Areas Commun., 1989)