one. Sturm-Liouville operators.- 1 Spectral theory in the regular case.- 2 Spectral theory in the singular case.- 3 The study of the spectrum.- 4 The distribution of the eigenvalues.- 5 Sharpening the asymptotic behaviour of the eigenvalues and the trace formulas.- 6 Inverse problems.- two. One-dimensional Dirac operators.- 7 Spectral theory in the regular case.- 8 Spectral theory in the singular case.- 9 The study of the spectrum.- 10 The solution of the Cauchy problem for the nonstationary Dirac system.- 11 The distribution of the eigenvalues.- 12 The inverse problem on the half-line, from the spectral function.- References.- Name Index.
