TY  - JOUR 
AU  - Albeverio, Sergio
AU  - Fassari, Silvestro
AU  - Rinaldi, F.
PY  - 2017
UR  - http://uvadoc.uva.es/handle/10324/29269
LA  - eng
TI  - The behaviour of the three-dimensional Hamiltonian -Δ+λ[δ(x+x0)+δ(x+x0)] as the distance between the two centers vanishes
ER  -