Alkhutov Yu.A., Chechkin G.A., “Increased Integrability of the Gradient of the Solution to the Zaremba Problem For the Poisson Equation”, Dokl. Math., 103:2 (2021), 69–71
A. G. Chechkina, C. D'Apice, U. De Maio, “Rate of convergence of eigenvalues to singularly perturbed Steklov-type problem for elasticity system”, Appl. Anal., 98:1-2, SI (2019), 32–44
A. G. Chechkina, “Estimate of the spectrum deviation of the singularly perturbed Steklov problem”, Dokl. Math., 96:2 (2017), 510–513