Bolton, James S. Cosmology, MPI for Astrophysics, Max Planck Society;
Viel, M., Becker, G. D., Bolton, J. S., Haehnelt, M. G., Rauch, M., & Sargent, W. L. W. (2008). How cold is cold dark matter? Small-scales constraints from the flux power spectrum of the high-redshift Lyman-α forest. Physical Review Letters, 100(4): 041304. doi:10.1103/PhysRevLett.100.041304.