1. On the absolutely continuous spectrum of one-dimensional Schrödinger operators with square summable potentials;Deift;Comm. Math. Phys.,1999
2. On the absolutely continuous spectrum of Dirac operator;Denisov;Comm. Partial Differential Equations,2004
3. Absolutely continuous spectrum for multidimensional Schrödinger operators;Denisov;Int. Math. Res. Not.,2004
4. Continuous analogs of polynomials orthogonal on the unit circle and Krein systems;Denisov;Int. Math. Res. Surveys,2006
5. On the preservation of absolutely continuous spectrum for Schrödinger operators;Denisov;J. Funct. Anal.,2006