Gadolinium(III) cryptates investigated by multifrequency EPR Andrzej Szyczewski a,∗, Stefan Lis b, Jerzy Krzystek c, Krzysztof Staninski b, Andrzej Kłonkowski d, Zdzisław Kruczyński a, Marek Pietraszkiewicz e a Faculty of Physics, A. Mickiewicz University, Umultowska 85, Poznań, Poland b Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, Poznań, Poland c National High Magnetic Field...