RT info:eu-repo/semantics/article T1 The behaviour of the three-dimensional Hamiltonian -Δ+λ[δ(x+x0)+δ(x+x0)] as the distance between the two centers vanishes A1 Albeverio, Sergio A1 Fassari, Silvestro A1 Rinaldi, F. YR 2017 FD 2017 LK http://uvadoc.uva.es/handle/10324/29269 UL http://uvadoc.uva.es/handle/10324/29269 LA eng NO Nanosystems: Physics, Chemistry, Mathematics 8 (2017) 153–159. NO Física Teórica. Atómica y Óptica DS UVaDOC RD 28-abr-2024