Spectral classifications in the near infrared of stars with composite spectra - II. Study of a sample of 180 starsN. Ginestet, J. M. Carquillat, C. Jaschek and M. JaschekAstron. Astrophys. Suppl. Ser., 123 1 (1997) 135-146DOI: https://doi.org/10.1051/aas:1997345