@article{GGL12,
  author =       {Geeraerts, G. and Goossens, J. and Lindstr\"om, M.}
  title =        {Multiprocessor Schedulability of Arbitrary-Deadline Sporadic
  Tasks: Complexity and Antichain Algorithm},
  page = {171--218},
  journal= {Real-Time Systems, The International Journal of Time-Critical Computing Systems},
  publisher = {springer},
  volume = {48},
  number = {2},
  year      = {2013}
}