@Article{BK04,
  author =       {Y. Bartal and E. Koutsoupias},
  title =        {On the Competitive Ratio of the Work Function Algorithm
                  for the $k$-Server Problem},
  journal = 	 {Theoretical Computer Science},
  year = 	 {2004},
  volume =	 {324},
  number = 	 {2-3},
  pages = 	 {337--345},
  month = 	 20 # sep,
  note =         {An early version appeared in STACS 2000},
}

@string{STACS00 = {17th Annual Symposium on Theoretical Aspects of
                   Computer Science}} 

@InProceedings{BK00,
  author =       {Y. Bartal and E. Koutsoupias},
  title =        {On the Competitive Ratio of the Work Function Algorithm
                  for the $k$-Server Problem},
  booktitle =    STACS00,
  year =         2000,
  month =        {17--19 } # feb,
  address =      {Lille, France},
  pages =        {605--613},
}