中国科学院数学与系统科学研究院期刊网
The Numbers of Nontrivial Weak Solutions to Fourth-order Impulsive Elastic Beam Equations
Jian LIU, Zeng Qin ZHAO, Wen Guang YU
Acta Mathematica Sinica, Chinese Series . 2021, (1): 99 -106 .  DOI: 10.12386/A2021sxxb0008