@misc{B._Schillings_Approximation,
 author={B. Schillings},
 address={Երևան},
 howpublished={online},
 publisher={Հայաստանի ԳԱԱ},
 abstract={The paper gives a short survey of resuls on approximation by overconvergent power series and discusses the question of possible lacunas of power series representing the universal functions.},
 title={Approximation by overconvergent power series},
 type={Հոդված},
 keywords={Mathematics, Science},
}