Liu, C.-S.C.-S.LiuHong, H.-K.H.-K.HongLiou, D.-Y.D.-Y.LiouHONG-KI HONG2019-12-192019-12-192003https://scholars.lib.ntu.edu.tw/handle/123456789/435975[SDGs]SDG11Two-dimensional friction oscillator: Group-preserving scheme and handy formulaejournal article10.1016/S0022-460X(02)01270-12-s2.0-0042430542https://www.scopus.com/inward/record.uri?eid=2-s2.0-0042430542&doi=10.1016%2fS0022-460X%2802%2901270-1&partnerID=40&md5=10fd3e5bca0eadfc25b7935f6f63851d