Kim, Jaiseung Physical Cosmology, MPI for Astrophysics, Max Planck Society;
Komatsu, Eiichiro Physical Cosmology, MPI for Astrophysics, Max Planck Society;
Kim, J., & Komatsu, E. (2013). Limits on anisotropic inflation from the Planck data. Physical Review D, 88(10): 101301, pp. 1-5. doi:10.1103/PhysRevD.88.101301.