Quantum entanglement in exactly soluble atomic models: the Moshinsky model with three electrons, and with two electrons in a uniform magnetic fieldP.A. Bouvrie, A.P. Majtey, A.R. Plastino, P. Sánchez-Moreno and J.S. DehesaEur. Phys. J. D, 66 1 (2012) 15DOI: https://doi.org/10.1140/epjd/e2011-20417-4