Symmetry/Asymmetry of the NHN Hydrogen Bond in Protonated 1, 8-Bis(dimethylamino)naphthalene. - Patrycja Piekos; Aneta Jezierska; Jaroslaw J. Panek; Eugene A. Goremychkin; Alexander F. Pozharskii; Alexander S. Antonov; Peter M. Tolstoy; Aleksander Filarowski (Symmetry, 2020)