https://epjd.epj.org/articles/epjd/abs/1998/12/d8178/d8178.html
The 2p4 3P1,2-2p33s 5S20 and 2p4 3P1,2-2s2p5 3P20 transitions in the oxygen isoelectronic sequence...
The European Physical Journal D (EPJ D) presents new and original research results in Atomic, Molecular, Optical and Plasma Physics