Comment on 'Calculations of energies of intrashell doubly excited states of beryllium-like ions'

Abstract
See Chen et al., ibid. vol.22, no.18, p.2875 (1989). An unexplained discrepancy between energy positions of C2+, N3+, O4+ and Ne6+ 1s2 3l3l' resonances calculated within the same Feshbach formalism is clarified.