  In a recent paper published in Nonlinear Analysis: Theory, Methods &
Applications, C. Argaez and M. Melgaard studied excited states for
pseudo-relativistic multi-configuration methods. Their paper follows a previous
work of mine in the non-relativistic case (Arch. Rat. Mech. Anal., 171, 2004).
The main results of the paper of C. Argaez and M. Melgaard are correct, but the
proofs are both wrong and incomplete.
