16. On the Transition Between Long and Short Period Comets, M. Harwit, CSUAC 18, Congr. + Coll. de l'Université de Liège, 37, 489, (1966).

16. On the Transition Between Long and Short Period Comets, M. Harwit, CSUAC 18, Congr. + Coll. de l'Université de Liège, 37, 489, (1966)., Box: 21, Folder: 27. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174367 Accessed January 28, 2026.