Modelling mid-infrared molecular emission lines from T Tauri stars P. Woitke, M. Min, W.-F. Thi, C. Roberts, A. Carmona, I. Kamp, F. Ménard and C. Pinte A&A, 618 (2018) A57 Published online: 11 October 2018 DOI: 10.1051/0004-6361/201731460