Um, so I took the papers title and list of authors "Unbound spectra of neutron-rich oxygen isotopes predicted by the Gamow shell model J. G. Li, N. Michel, W. Zuo, and F. R. Xu"

Threw that into Google Scholar and the only hit had a link to the pdf of the paper

https://link.aps.org/accepted/10.1103/PhysRevC.103.034305