1. Ade, P., et al. (Planck Collaboration): arXiv:1303.5076 (2013)
2. Ade, P., et al. (Planck Collaboration): Astron. Astrophys. 571, A8 (2014)
3. Ade, P., et al. (Planck Collaboration): arXiv:1502.01593v1 (2015)
4. Bennett, C.L., et al.: Astrophys. J. Suppl. Ser. 148, 97 (2003)
5. Clocchiatti, A., et al. (High Z SN Search Collaboration): Astrophys. J. 642, 1 (2006)