1. Abdel-Rahman, A.M.: Singularity-free decaying-vacuum cosmologies. Phys. Rev. D 45(10), 3497 (1992)
2. Abdel-Rahman, A.M., Riad, I.F.: Astron. J. 134, 1391 (2007)
3. Aghanim, N., Ashdown, M., Aumont, J., Baccigalupi, C., Ballardini, M., Banday, A.J., et al.: Planck intermediate results-XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth. Astron. Astrophys. 596, A107 (2016)
4. Alam, S., Ata, M., Bailey, S., et al.: Mon. Not. R. Astron. Soc. 470, 2617 (2017). arXiv:1607.03155
5. Allen, R.E.: Four testable predictions of instanton cosmology. In: AIP Conference Proceedings, vol. 478, pp. 204–207. AIP, New York (1999). No. 1