@misc{Lung-Hui_Chen_A,
 author={Lung-Hui Chen},
 address={Երևան},
 howpublished={online},
 publisher={Հայաստանի ԳԱԱ},
 title={A sub-density theorem of Sturm-Liouville eigenvalue problem with finitely many singularities},
 type={Հոդված},
 keywords={Mathematics, Science},
}