Corbató, Fernando J.; Merwin-Daggett, Marjorie; Daley, Robert C. (1962). "An experimental time-sharing system". Proceedings of the May 1-3, 1962, spring joint computer conference on - AIEE-IRE '62 (Spring). p. 335. doi:10.1145/1460833.1460871. S2CID14363753.
Corbató, Fernando J.; Merwin-Daggett, Marjorie; Daley, Robert C. (1962). "An experimental time-sharing system". Proceedings of the May 1-3, 1962, spring joint computer conference on - AIEE-IRE '62 (Spring). p. 335. doi:10.1145/1460833.1460871. S2CID14363753.