ALMA data suggest the presence of spiral structure in the inner wind of CW Leonis L. Decin, A. M. S. Richards, D. Neufeld, W. Steffen, G. Melnick and R. Lombaert A&A, 574 (2015) A5 Published online: 15 January 2015 DOI: 10.1051/0004-6361/201424593