S. A. Denisov
On the application of one M.G.Krein's result to the spectral 
analysis of Sturm-Liouville operators.
(35K, LaTeX)

ABSTRACT.  Discovered by M.G.Krein analogy between polynomials orthogonal on the 
unit circle and generalized eigenfunctions of certain differential 
systems is used to obtain some new results in spectral analysis 
of Sturm-Liouville operators. Some properties of Dirac-type 
systems are studied.