For citations:

Koroleva Yu.O., Chechkina T.P. On the Asymptotic Behavior of a Simple Eigenvalue of the Steklov Problem Perturbed on a Small Part of the Boundary by the Homogeneous Dirichlet Condition. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2019;8(3):253-263. (In Russ.) https://doi.org/10.1134/S2304487X19010073