@article{article53398acf,
title   = {Endo-cavity complexes between calix[6]arene dianions and aliphatic ammonium cations: structure of a hexylammonium complex by X-ray crystallography},
author = {Nachtigall, Francine F. and Lazzarotto, Márcio and Castellano, Eduardo Ernesto and Nome, Faruk},
year = {2004},
journal   = {Supramolecular Chemistry}
}