M. P. Di Mauro u. a.: Internal rotation of red giants by asteroseismology. In: Astrophysics. Solar and Stellar Astrophysics. 2012, arxiv:1212.4758.
doi.org
Timothy R. Bedding u. a.: Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars. In: Nature. Band471, Nr.4, 2011, S.608–611, doi:10.1038/nature09935.