4 m spectra of AGB stars I. ObservationsT. Lebzelter, K. H. Hinkle and B. AringerA&A, 377 2 (2001) 617-630DOI: https://doi.org/10.1051/0004-6361:20010994
m spectra of AGB stars I. Observationsm spectra of AGB stars I. Observations