S. Albeverio, S. Fassari, F. Rinaldi
The behaviour of the three-dimensional Hamiltonian -Δ+λ[δ(x+x0)+δ(x-x0)] as the distance between the two centres vanishes 153
G. Cardone
Waveguides with fast oscillating boundary 160
V. Derkach, C. Trunk
Coupling of definitizable operators in Kreĭn spaces 166
L. Grubišić, J. Tambača
Quasi-semidefinite eigenvalue problem and applications 180
A.S. Melikhova
Zigzag chain model and its spectrum 188
D.L. Meynster, I.Y. Popov, A.I. Popov
Model of tunneling through double quantum layer in a magnetic field 194
H. Neidhardt, A. Stephan, V.A. Zagrebnov
On convergence rate estimates for approximations of solution operators for linear non-autonomous evolution equations 202
N. Peyerimhoff, M. Täufer, I. Veselić
Unique continuation principles and their absence for Schrödinger eigenfunctions on combinatorial and quantum graphs and in continuum space 216