Hekker, S. Max Planck Research Group in Stellar Ages and Galactic Evolution (SAGE), Max Planck Institute for Solar System Research, Max Planck Society;
Mosser, B., Dziembowski, W. A., Belkacem, K., Goupil, M. J., Michel, E., Samadi, R., et al. (2013). Period-luminosity relations in evolved red giants explained by solar-like oscillations. Astronomy and Astrophysics, 559: A137. doi:10.1051/0004-6361/201322243.