Afram, N., Berdyugina, S. V., Fluri, D. M., Solanki, S. K., & Lagg, A. (2008). The FeH F4 Δ-X4 Δ system. Creating a valuable diagnostic tool to explore solar and stellar magnetic fields. Astronomy and Astrophysics, 482, 387-395. doi:10.1051/0004-6361:20079300.