Grinnell, J.
1931. Some angles in the problem of bird migration. Auk 48: 22-32.
Gross, A. O.
1927. The Snowy Owl migration of 1926-27. Auk 44: 479-493.
1947. Cyclic invasions of the Snowy Owl and the migration of 1945-46. Auk 64(4): 584-601.
Gwynn, A. M.
1968. The migration of the Arctic Tern. Aust. Bird Bander 6(4): 71-75.
Haartman, L. von.
1968. The evolution of resident vs. migratory habit in birds: some considerations. Ornis Fenn. 45(1): 1-7.
Hagar, J. A.