@misc{Tumanyan_A._On,
 author={Tumanyan, A.},
 address={Երևան},
 howpublished={online},
 publisher={Հայաստանի ԳԱԱ},
 title={On the Fredholm property of semielliptic operators in anisotropic weighted spaces in Rⁿ},
 type={Հոդված},
 keywords={Mathematics},
}