@article{SengeRosslervonGersdorffetal.2004,
  author    = {Mathias O. Senge and B. Rossler and J. von Gersdorff and A. Schafer and H. Kurreck},
  title     = {The meso-beta-linkage as structural motif in porphyrin-based donor-acceptor compounds},
  year      = {2004},
}