Cioslowski, Jerzy Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
https://link.springer.com/article/10.1007/s00214-018-2362-5 (Publisher version)
Cioslowski, J. (2018). Natural orbitals of the ground state of the two-electron harmonium atom. Theoretical Chemistry Accounts, 137(12): 173. doi:10.1007/s00214-018-2362-5.