TY - JOUR AU - Duane Birnbaum AU - Denis Fichou AU - B. Kohler BT - The Journal of Chemical Physics DA - Jan-01-1992 DO - 10.1063/1.462504 PY - 1992 EP - 165 T2 - The Journal of Chemical Physics TI - The lowest energy singlet state of tetrathiophene, an oligomer of polythiophene UR - http://link.aip.org/link/JCPSA6/v96/i1/p165/s1\&Agg=doi VL - 96 SN - 00219606 ER -