68. Tachyon Bit Rates, M. Harwit, in "Communication with Extraterrestrial Intelligence, C. Sagan, ed., MIT Press, p. 395, (1973).

68. Tachyon Bit Rates, M. Harwit, in "Communication with Extraterrestrial Intelligence, C. Sagan, ed., MIT Press, p. 395, (1973)., Box: 21. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174419 Accessed January 21, 2026.