The Infrared Telescope Facility (IRTF) spectral library: - Spectral diagnostics for cool starsM. Cesetti, A. Pizzella, V. D. Ivanov, L. Morelli, E. M. Corsini and E. Dalla BontàA&A, 549 (2013) A129DOI: https://doi.org/10.1051/0004-6361/201219078