@InProceedings{dreyer+:mtc,
  author = 	 {Derek Dreyer and Robert Harper and Manuel M. T. Chakravarty},
  title = 	 {Modular Type Classes},
  booktitle = {Proc 24th {ACM} {SIGPLAN-SIGACT} Symposium on Principles of Programming Languages},
  pages = 	 {?--?},
  year = 	 2007,
  address = 	 {Nice, France},
  month = 	 {January},
  note = 	 {(To appear)}}