Não informado. (2000). Transactions. American Geophysical Union.
Lua i Stíl Chicago (17ú heag.)Não informado. Transactions. Washington: American Geophysical Union, 2000.
Lua MLA (8ú heag.)Não informado. Transactions. American Geophysical Union, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.