2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63163We apply recent results on semi-classical trace formulae and on Birkhoff normal forms for semi-classical Fourier integral operators to a wide range of semi-classical and high energy spectral inverse problems.Spectral TheoryMathematical Physics35P99, 35S30, 58J53Birkhoff Normal Forms in Semi-Classical Inverse Problemstext