Eigenvalue asymptotics of the even-dimensional exterior Landau-Neumann Hamiltonian. Persson, Mikael — 2009 Advances in Mathematical Physics
On the Aharonov-Casher formula for different self-adjoint extensions of the Pauli operator with singular magnetic field. Persson, Mikael — 2005 Electronic Journal of Differential Equations (EJDE) [electronic only]