(1981). Vol. 44, № 4; Mineralogical magazine. 1981.
Lua i Stíl Chicago (17ú heag.)Vol. 44, № 4; Mineralogical Magazine. 1981, 1981.
Lua MLA (9ú heag.)Vol. 44, № 4; Mineralogical Magazine. 1981, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.