32. Preliminary Observations of the Far Infrared Night Sky Background Radiation, K. Shivanandan, J. R. Houck and M. Harwit, Phys. Rev. Let., 21, 1460, (1968).

32. Preliminary Observations of the Far Infrared Night Sky Background Radiation, K. Shivanandan, J. R. Houck and M. Harwit, Phys. Rev. Let., 21, 1460, (1968)., Box: 21, Folder: 29. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174383 Accessed January 25, 2026.