@article{10243,
  author = {James Duff and D. Truhlar},
  title = {Classical S matrix: Application to classically forbidden vibrational excitation for He+HBr and H+Br2},
  year = {1976},
  journal = {Chemical Physics},
  volume = {17},
  pages = {249-254},
  month = {Jan-11-1976},
  issn = {03010104},
  url = {http://linkinghub.elsevier.com/retrieve/pii/S0301010476800286},
  doi = {10.1016/S0301-0104(76)80028-6},
}