@article{4960,
  author = {Duane Birnbaum and Denis Fichou and B. Kohler},
  title = {The lowest energy singlet state of tetrathiophene, an oligomer of polythiophene},
  year = {1992},
  journal = {The Journal of Chemical Physics},
  volume = {96},
  pages = {165},
  month = {Jan-01-1992},
  issn = {00219606},
  url = {http://link.aip.org/link/JCPSA6/v96/i1/p165/s1\&Agg=doi},
  doi = {10.1063/1.462504},
}