Asplund, M. Stellar Astrophysics, MPI for Astrophysics, Max Planck Society;
Kerzendorf, W. E., Schmidt, B. P., Asplund, M., Nomoto, K., Podsiadlowski, P., Frebel, A., et al. (2009). Subaru high-resolution spectroscopy of star G in the tycho supernova remnant. The Astrophysical Journal, 701(2), 1665-1672. doi:10.1088/0004-637X/701/2/1665.