SiO masers from AGB stars in the vibrationally excited v = 1, v = 2, and v = 3 states J.-F. Desmurs, V. Bujarrabal, M. Lindqvist, J. Alcolea, R. Soria-Ruiz and P. Bergman A&A, 565 (2014) A127 Published online: 27 May 2014 DOI: 10.1051/0004-6361/201423550