@misc{M._Errebii_Exponential,
 author={M. Errebii and I. Ellouze and M. A. Hammami},
 address={Երևան},
 howpublished={online},
 publisher={Հայաստանի ԳԱԱ},
 title={Exponential convergence of nonlinear time-varying differential equations},
 type={Հոդված},
 keywords={Mathematics, Science},
}