@article{754686,
  author = {Emanuel Knill and Rolando Somma and Howard Barnum and Gerardo Ortiz},
  title = {Efficient solvability of Hamiltonians and limits on the power of some quantum computational models},
  year = {2006},
  month = {2006-01-04 00:01:00},
  publisher = {Physical Review Letters},
  language = {en},
}