A. Eliseev

Asymptotic integration of singularly perturbed problems

S. A. Lomov, A. Eliseev, 1988 .

AVERAGING OF BOUNDARY VALUE PROBLEMS WITH A SINGULAR PERTURBATION OF THE BOUNDARY CONDITIONS

E. Shchepakina, A. Eliseev, 2017 .

Singularly Perturbed Cauchy Problem in Which the Limit Operator has Multiple Spectrum and a Weak First-Order Turning Point

A. Eliseev, P. V. Kirichenko, 2022, Differential Equations.