Rojas-Ayala, Bárbara et al 2012. Metallicity and temperature indicators in M dwarf K-band spectra: testing new and updated calibrations with observations of 133 solar neighborhood M dwarfs. Astrophysical Journal748 (2): 93. [1]
McLean, Ian S. et al 2003. The NIRSPEC brown dwarf spectroscopic survey. I. low-resolution near-infrared spectra. Astrophysical Journal596 (1): 561–586. [2]
