@article{KleinpeterStamboliyska2009,
  author    = {Erich Kleinpeter and Bistra A. Stamboliyska},
  title     = {Hyperpolarizability of donor-acceptor azines subject to push-pull character and steric hindrance},
  doi       = {10.1016/j.tet.2009.09.026},
  url       = {http://www.sciencedirect.com/science/journal/00404020},
  year      = {2009},
}