@article{20.500.12614/295, year = {2009}, url = {http://hdl.handle.net/20.500.12614/295}, title = {On the origin of small band gaps in alternating thiophene - thienopyrazine oligomers}, doi = {10.1021/jp9050148}, volume = {113}, journal = {Journal of Physical Chemistry A}, author = {Karsten B.P. and Viani L. and Gierschner, Johannes and Cornil J. and Janssen R.A.J.}, }