Extended view on the dust shells around two carbon starsM. Mečina, B. Aringer, W. Nowotny, M. A. T. Groenewegen, F. Kerschbaum, M. Brunner and H.-P. GailA&A, 644 (2020) A66DOI: https://doi.org/10.1051/0004-6361/202039178
