RCP, the Experimental Packet-Switched Data Transmission Service of the French PTT: History, Connections, Control. - Alain Bache; Louis C. Guillou; Herve Layec; Bernard Lorig; Yves Matras (ICCC, 1976)

Cryptography and teleinformatics. - Louis C. Guillou; Bernard Lorig (Comput. Secur., 1982)