@article{4647,
  author = {Duane Birnbaum and B. Kohler},
  title = {Electronic structure of thiophene and pyrrole dimers: 2,2\textquoteright-bithiophene, 2,2\textquoteright-thienylpyrrole, and 2,2\textquoteright-bipyrrole},
  year = {1991},
  journal = {The Journal of Chemical Physics},
  volume = {95},
  pages = {4783},
  month = {Jan-01-1991},
  issn = {00219606},
  url = {http://link.aip.org/link/JCPSA6/v95/i7/p4783/s1\&Agg=doi},
  doi = {10.1063/1.461721},
}