Existence and multiplicity results for partially superquadratic elliptic systems. - Yucheng Wei; Shaoyun Shi; Guanggang Liu (Appl. Math. Lett., 2013)

Rotating periodic solutions for super-linear second order Hamiltonian systems. - Guanggang Liu; Yong Li; Xue Yang (Appl. Math. Lett., 2018)

Existence and multiplicity of periodic solutions for damped vibration problems with nonlinearity of linear growth. - Guanggang Liu; Shaoyun Shi (Appl. Math. Lett., 2020)