Resonant X-ray excitation of the nuclear clock isomer 45Sc - Shvyd’ko, Yuri; Röhlsberger, Ralf; Kocharovskaya, Olga; Evers, Jörg; Geloni, Gianluca Aldo; Liu, Peifan; Shu, Deming; Miceli, Antonino; Stone, Brandon; Hippler, Willi; Marx-Glowna, Berit; Uschmann, Ingo; et al. (Nature: International weekly journal of science, 2023)