(1968). Vol. 21, № 23; Physical Review Letters. 1968.
Lua i Stíl Chicago (17ú heag.)Vol. 21, № 23; Physical Review Letters. 1968, 1968.
Lua MLA (9ú heag.)Vol. 21, № 23; Physical Review Letters. 1968, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.