f-mode oscillations of protoneutron starsRemoveZi-Yue Zheng (郑子岳), Ting-Ting Sun (孙婷婷), Huan Chen (陈欢), Jin-Biao Wei (魏金标), Xiao-Ping Zheng (郑小平), G. F. Burgio, and H.-J. SchulzePhys. Rev. D 112, 063015 (2025)