1. The two-dimensional periodic magnetic Hamiltonian is absolutely continuous;Birman, M. Sh.;Algebra i Analiz,1997
2. Absolute continuity of a two-dimensional periodic magnetic Hamiltonian with discontinuous vector potential;Birman, M. Sh.;Algebra i Analiz,1998
3. The periodic Dirac operator is absolutely continuous;Birman, M. Sh.;Integral Equations Operator Theory,1999
4. A periodic magnetic Hamiltonian with a variable metric. The problem of absolute continuity;Birman, M. Sh.;Algebra i Analiz,1999
5. Absolute continuity of the two-dimensional Schrödinger operator with delta potential concentrated on a periodic system of curves;Birman, M. Sh.;Algebra i Analiz,2000