Schaller, T., Büchele, U. P., Klärner, F. G., Bläser, D., Boese, R., Brown, S. P., et al. (2007).
Structure of molecular tweezer complexes in the solid state: NMR experiments, X-ray investigations, and quantum chemical calculations. Journal of the American Chemical Society, 129(5), 1293-1303.
doi:10.1021/ja0666351.