中国科学院数学与系统科学研究院期刊网
Response Solutions for Degenerate Reversible Harmonic Oscillators with Zero-average Perturbation
Xin Yu GUAN, Jian Guo SI, Wen SI
Acta Mathematica Sinica . 2023, (10): 2006 -2030 .  DOI: 10.1007/s10114-023-1539-6