@article{11534,
  author = {R. Porter and L. Raff},
  title = {Configuration Interaction in the Simple Valence-Bond Wavefunction for the Potential-Energy Surfaces of Sigma-Bonded Four-Center Exchange-Reaction Complexes},
  year = {1969},
  journal = {The Journal of Chemical Physics},
  volume = {50},
  pages = {5216},
  month = {Jan-01-1969},
  issn = {00219606},
  url = {http://link.aip.org/link/?JCP/50/5216/1\&Agg=doi},
  doi = {10.1063/1.1671037},
}