Enlace original:
http://repositorio.uchile.cl/handle/2250/125545
Noterdaeme, P.
,
Petitjean, P.
,
Srianand, R.
,
Ledoux, C.
,
López, S.
,
[The evolution of the cosmic microwave background temperature Measurements of T(CMB) at high redshift from carbon monoxide excitation]