Systematic optical measurements of 4f fine-structure splittings in Ag-like ionsRemoveNaoki Kimura, Endre Takacs, Hayato Ohashi, Chihiro Suzuki, Daiji Kato, Izumi Murakami, Nobuyuki Nakamura, and Hiroyuki A. SakauePhys. Rev. A 114, 012811 (2026)