Albrecht، A.؛ Steinhardt، P. J. (1982). "Cosmology For Grand Unified Theories With Radiatively Induced Symmetry Breaking". Phys. Rev. Lett. ج. 48 ع. 17: 1220–1223. Bibcode:1982PhRvL..48.1220A. DOI:10.1103/PhysRevLett.48.1220.
Albrecht، A.؛ Steinhardt، P. J. (1982). "Cosmology For Grand Unified Theories With Radiatively Induced Symmetry Breaking". Phys. Rev. Lett. ج. 48 ع. 17: 1220–1223. Bibcode:1982PhRvL..48.1220A. DOI:10.1103/PhysRevLett.48.1220.