@article{BenassiBertariniKleinpeteretal.2000, author = {Rois Benassi and C. Bertarini and Erich Kleinpeter and F. Taddei}, title = {Exocyclic push-pull conjugated compounds, Part 2 : the effect of donor and acceptor substituents on the rotational barrier of push-pull ethylenes}, year = {2000}, }