Birkel, M., & Sarkar, S. (1997). Ruling out a critical density baryonic universe.
Lua i Stíl Chicago (17ú heag.)Birkel, M., agus S. Sarkar. Ruling Out a Critical Density Baryonic Universe. 1997.
Lua MLA (9ú heag.)Birkel, M., agus S. Sarkar. Ruling Out a Critical Density Baryonic Universe. 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.