@misc{Tang_Xianhua_Periodic,
 author={Tang, Xianhua and Zhang, Xingyong},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 type={artykuł},
 title={Periodic solutions for second-order Hamiltonian systems with a p-Laplacian},
 keywords={matematyka},
}