2,2‘-Bithiophene Radical Cation: An Experimental and Computational Study (2000)Tamás Keszthelyi, Mette M.-L. Grage, Jesper F. Offersgaard, Robert Wilbrandt, Christian Svendsen, O. Sonnich Mortensen, Jesper K. Pedersen, Hans Jørgen Aa. Jensen The Journal of Physical Chemistry A 104/12 p2808-2823
American Chemical Society (ACS) DOI:10.1021/jp993913s