UV, IR, and mm studies of CO surrounding the red supergiant α Orionis (M2 Iab)
Proceedings article published in 2009 by
G. M. Harper,
K. G. Carpenter,
Nils Ryde 
,
N. Smith,
J. Brown,
A. Brown,
K. H. Hinkle
,
N. Smith,
J. Brown,
A. Brown,
K. H. Hinkle
