A multi-wavelength study of the oxygen-rich AGB star CIT 3: Bispectrum speckle interferometry and dust-shell modellingK.-H. Hofmann, Y. Balega, T. Blöcker and G. WeigeltA&A, 379 2 (2001) 529-539DOI: https://doi.org/10.1051/0004-6361:20011318