Network/440 Protocol Concept. - Doug B. McKay; Donald P. Karp (RFC, 1971)

A Communications Interface for Computer Networks. - Donald P. Karp; Salomon F. Seroussi (IEEE Trans. Commun., 1972)

Protocol for a Computer Network. - Doug B. McKay; Donald P. Karp (IBM Syst. J., 1973)

Display-Based Address Sorting for the IMAP4 SORT Extension. - Donald P. Karp (RFC, 2010)