Yang Yue-Bin, Zuo Wen-Long, Bao Yan-Xiang, Liu Shu-Yu, Li Long-Fei, Zhang Jin-Xiu, Xiong Xiao-Min. Detection of a coupled vibration by mechanical resonant absorption spectraJ. Acta Physica Sinica, 2012, 61(20): 200509. DOI: 10.7498/aps.61.200509