A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca - Koiwai, T; K. Wimmer; Doornenbal, P; Obertelli, A; Barbieri, C; Duguet, T; Holt, JD; Miyagi, T; Navrátil, P; Ogata, K; others (Physics Letters B, 2022)