Yurij A. Alkhutov, Gregory A. Chechkin, “On the Estimate of the Absolute Value of Eigenfunctions to the Steklov–Zaremba Problem for the Laplace Operator”, Axioms, 14:11 (2025), 788
G. Cardone, S. A. Nazarov, J. Taskinen, “Asymptotic expansions of solutions to the Poisson equation with alternating boundary conditions on an open arc”, SIAM J. Math. Anal., 55:6 (2023), 6940