@InProceedings{BaaLutSun-JoLLI-07,
  author = 	{Franz Baader and Carsten Lutz and Boontawee Suntisrivaraporn},
  title = 	{Is Tractable Reasoning in Extensions of the Description Logic $\mathcal{EL}$ Useful in Practice?},
  booktitle = 	{Journal of Logic, Language and Information, Special Issue on Method for Modality (M4M)},
  year = 	{2007},
  note =        "To appear"
}