Deformation Quantization of Bosonic Strings
  Deformation quantization of bosonic strings is considered. We show that the light-cone gauge is the most convenient classical description to perform the quantization of bosonic strings in the deformation quantization formalism. Similar to the field theory case, the oscillator variables greatly facilitates the analysis. The mass spectrum, propagators and the Virasoro algebra are finally described within this deformation quantization scheme. 
H. Garcia-Compean, J.F. Plebanski, M. Przanowski and F.J. Turrubiates