Ming C. Lin
Department of Computer Science
University of North Carolina
Chapel Hill, NC 27599-3175
lin@cs.unc.edu
PHO: 919-962-1974
FAX: 919-962-1799
Miguel Otaduy
Department of Computer Science
ETH Zentrum
CH - 8092 Zürich
otaduy@inf.ethz.ch
PHO: +41-1-632 75 46
FAX: +41-1-632-15-96