2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69924For a class of non-selfadjoint semiclassical operators in dimension one, we get a complete asymptotic description of all eigenvalues near a critical value of the leading symbol of the operator on the boundary of the pseudospectrum.1 figureSpectral TheoryMathematical Physics34E05; 34L20; 47A12text