Page 4.The extension of Hohenberg-Kohn theorem to relativistic systems was first formulated in Ref. 5 by utilizing a QED-based Hamiltonian with the four-current variable. (Was it Hamiltonian, not Lagrangian?)
Page 9. Bonn-Idaho group showed the relativistic OBE potentials.
Page 10. Three-body (3B) force is now known as important for saturation density. Relativistic BHF without 3B force is able to improve the saturation density closer to experimental data. This gives a hint on why the covariant DFT is necessary.
Page 12. Tensor force is an open problem both in non-rela' and rela' DFTs for nuclei. (Still today?)
Page 13. Probably, we will never get able to exclude the phenomenological parameters and their fine tuning for finite nuclei.
Page 120. Proton drip line and proton radioactivity.
