"The Far Infrared and Submillimeter Background," by J.R. Houck, Baruch T. Soifer, Martin Harwit and Judith L. Pipher, 1972

"The Far Infrared and Submillimeter Background," by J.R. Houck, Baruch T. Soifer, Martin Harwit and Judith L. Pipher, 1972, Box: 20, Folder: 9. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174228 Accessed January 18, 2026.