V Kostrykin, R Schrader, “Kirchhoff's rule for quantum wires”, J. Phys. A: Math. Gen., 32:4 (1999), 595
Pavel Exner, “Magnetoresonances on a lasso graph”, Found Phys, 27:2 (1997), 171
Alexander Kiselev, “Some Examples in One-Dimensional “Geometric” Scattering on Manifolds”, Journal of Mathematical Analysis and Applications, 212:1 (1997), 263
Pavel Exner, “Weakly coupled states on branching graphs”, Lett Math Phys, 38:3 (1996), 313
P. Exner, R. Gawlista, “Band spectra of rectangular graph superlattices”, Phys. Rev. B, 53:11 (1996), 7275
Pavel Exner, “Lattice Kronig-Penney Models”, Phys. Rev. Lett., 74:18 (1995), 3503
J.-P. Antoine, P. Exner, P. Šeba, J. Shabani, Operator Theory: Advances and Applications, 70, Mathematical Results in Quantum Mechanics, 1994, 79
N. I. Gerasimenko, “Inverse scattering problem on a noncompact graph”, Theoret. and Math. Phys., 75:2 (1988), 460–470