@article{SchiefeleHenkel2009,
  author    = {J{\"u}rgen Schiefele and Carsten Henkel},
  title     = {Casimir energy of a BEC : from moderate interactions to the ideal gas},
  doi       = {10.1088/1751-8113/42/4/045401},
  url       = {http://iopscience.iop.org/1751-8121/},
  year      = {2009},
}