Banday, A. J. Cosmology, MPI for Astrophysics, Max Planck Society;
Barreiro, R. B., Hobson, M. P., Banday, A. J., Lasenby, A. N., Stolyarov, V., Vielva, P., et al. (2004). Foreground separation using a flexible maximum-entropy algorithm: an application to COBE data. Monthly Notices of the Royal Astronomical Society, 351(2), 515-538. doi:10.1111/j.1365-2966.2004.07802.x.