For citations:
Albeverio S., Fassari S., Rinaldi F. Spectral properties of a symmetric three-dimensional quantum dot with a pair of identical attractive δ-impurities symmetrically situated around the origin II. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(5):803-815. https://doi.org/10.17586/2220-8054-2016-7-5-803-815