Szolnoki, E., A. Hetenyi, István M. Mándity, Ferenc Fülöp, and Tamás A. Martinek. 2013. “Foldameric Β-H18/20P Mixed Helix Stabilized By Head-To-Tail Contacts: A Way To Higher-Order Structures”. European Journal Of Organic Chemistry 2016. Guichard, G., Huc, I., (2011) Chem. Commun., 47, p. 5933;: 3555–3559.