S.A. Denisov
On the coexistence of absolutely continuous and singular continuous 
components of the spectral measure for some Sturm-Liouville operators 
with square summable potentials.
(23K, LATeX)

ABSTRACT.  We prove that there exist some Sturm-Liouville operators with square 
summable potentials such that the singular continuous component of the 
 spectral measure lies on the positive half-line.