(en) G. Hinshaw, D. Larson, E. Komatsu, D. N. Spergel, C. L. Bennett et al., « Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results », The Astrophysical Journal Supplement Series, The American Astronomical Society, vol. 208, no 2, , p. 1-25, article no 19 (lire en ligne).
(en) C. L. Bennett, D. Larson, J. L. Weiland, N. Jarosik, G. Hinshaw et al., « Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results », The Astrophysical Journal Supplement Series, The American Astronomical Society, vol. 208, no 2, , p. 1-54, article no 20 (lire en ligne).