RT Journal T1 Nonlocal Symmetries and Geometric Integrability of Multi-Component Camassa–Holm and Hunter–Saxton Systems A1 YAN Lu, SONG Jun-Feng, QU Chang-Zheng** PB Chin. Phys. Lett. FD 2011-04-26 YR 2011 JF Chinese Physics Letters JO Chin. Phys. Lett. VO 28 IS 5 SP 050204DO 10.1088/0256-307X/28/5/050204 K1 02.30.Hq;11.30.-j;02.40.Hw LK {https://cpl.iphy.ac.cn/EN/article/article_44289.shtml}