@TechReport{AckermannGMRV07,
  author      = {Heiner Ackermann and Paul W. Goldberg and Vahab S. Mirrokni and Heiko R{\"o}glin and Berthold V{\"o}cking},
  title       = {Uncoordinated Two-Sided Markets},
  institution =	{RWTH Aachen},
  year        = {2007},
  number      = {AIB-2007-22},
  month       = dec,
  url         = {http://aib.informatik.rwth-aachen.de/2007/2007-22.ps.gz},
}