Open membranes in a constant C-field background and noncommutative   boundary strings
  We investigate the dynamics of open membrane boundaries in a constant C-field background. We follow the analysis for open strings in a B-field background, and take some approximations. We find that open membrane boundaries do show noncommutativity in this case by explicit calculations. Membrane boundaries are one dimensional strings, so we face a new type of noncommutativity, that is, noncommutative strings. 
Shoichi Kawamoto, Naoki Sasakura (Kyoto Univ.)