@article{757191,
  author = {Rolando Somma and Gerardo Ortiz and Howard Barnum and Emanuel Knill and Lorenza Viola},
  title = {Nature and Measure of Entanglement in Quantum Phase Transactions},
  year = {2004},
  number = {70},
  month = {2004-10-01 00:10:00},
  publisher = {Physical Review A (Atomic, Molecular and Optical Physics)},
  language = {en},
}