Não informado. (1975). Journal of Physics. Institute of Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Physics. Bristol, Inglaterra: Institute of Physics, 1975.
Lua MLA (8ú heag.)Não informado. Journal of Physics. Institute of Physics, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.