The close circumstellar environment of Betelgeuse - Adaptive optics spectro-imaging in the near-IR with VLT/NACOP. Kervella, T. Verhoelst, S. T. Ridgway, G. Perrin, S. Lacour, J. Cami and X. HauboisA&A, 504 1 (2009) 115-125DOI: https://doi.org/10.1051/0004-6361/200912521
