@article{120831,
  author = {D Birnbaum and D Fichou and B Kohler},
  title = {The lowest energy singlet state of tetrathiophene, an oligomer of polythiophene},
  year = {1992},
  number = {96},
  month = {1992-01-01},
  publisher = {Journal of Chemical Physics},
  language = {en},
}