Push or Pull for a Better Selectivity? A Study on the Electronic Effects of Substituents of the Pyridine Ring on the Enantiomeric Recognition of Chiral Pyridino-18-Crown-6 Ethers. - Balázs Szemenyei; Balázs Novotny; Sarolta Zsolnai; Zsombor Miskolczy; László Biczók; Attila Takács; László Kollár; László Drahos; Ildikó Móczár; Péter Huszthy (Symmetry, 2020)