1. J.M. Lehn, in: J.W. Steed, J.L. Atwood (Eds.), Supramolecular Chemistry, Wiley, Chichester, 2000.
2. J.M. Lehn, Supramolecular Chemistry, New York, VCH, 1995.
3. H. Aghabozorg, E. Sadr-khanlou, J. Soleimannejad, H. Adams, Acta Cryst. E63 (2007) 1760.
4. H. Aghabozorg, Z. Bahrami, M. Tabatabaie, M. Ghadermazi, J. Attar Gharamaleki, Acta Cryst. E63 (2007) 2022.
5. J. Soleimannejad, H. Aghabozorg, S. Hooshmand, M. Ghadermazi, J. Attar Gharamaleki, Acta Cryst. E63 (2007) 2389.