@InProceedings{oyang:m2io,
  author = {Yen-Jen Oyang},
  title = {Architecture, Operating System, and {I/O} Subsystem Design of the
  {$M^2$} Database Machine},
  booktitle = {Proceedings of the Parallel Systems Fair at the International
  Parallel Processing Symposium},
  year = {1993},
  pages = {31--38},
  keywords = {parallel I/O, multiprocessor file system, parallel database,
  pario-bib},
  comment = {A custom multiprocessor with a shared-memory clusters networked
  together and to shared disks. Runs Mach. Directory-based coherence protocol
  for the distributed file system. Background writeback.}
}