出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We review present information on cosmological neutrinos, and more generally
on relativistic degrees of freedom at the Cosmic Microwave Background formation epoch,
in view of the recent results of WMAP collaborations on temperature anisotropies of the
CMB, as well as of recent detailed analysis of Primordial Nucleosynthesis.
