Hekker, Saskia Max Planck Research Group in Stellar Ages and Galactic Evolution (SAGE), Max Planck Institute for Solar System Research, Max Planck Society;
Majewski, S. R., Schiavon, R. P., Frinchaboy, P. M., Allende Prieto, C., Barkhouser, R., Bizyaev, D., et al. (2017). The Apache Point Observatory Galactic Evolution Experiment (APOGEE). Astronomical Journal, 154: 94. doi:10.3847/1538-3881/aa784d.