TY - JOUR AU - Birnbaum, D AU - Kohler, B C2 - Journal of Chemical Physics DA - 1991-01-01 LA - en M1 - 95 PB - Journal of Chemical Physics PY - 1991 TI - Electronic structure of thiophene and pyrrole dimers: 2,2'-bithiophene, 2,2'-thienylpyrrole, and 2,2'bipyrrole ER -