+@Article{verstraete08,
+ title = "Density functional perturbation theory with spin-orbit
+ coupling: Phonon band structure of lead",
+ author = "Matthieu J. Verstraete and Marc Torrent and
+ Fran\ifmmode \mbox{\c{c}}\else \c{c}\fi{}ois Jollet and
+ Gilles Z\'erah and Xavier Gonze",
+ journal = "Phys. Rev. B",
+ volume = "78",
+ issue = "4",
+ pages = "045119",
+ numpages = "9",
+ year = "2008",
+ month = jul,
+ doi = "10.1103/PhysRevB.78.045119",
+ URL = "http://link.aps.org/doi/10.1103/PhysRevB.78.045119",
+ publisher = "American Physical Society",
+}
+
+@Article{cuadrado12,
+ author = "R. Cuadrado and J. I. Cerdá",
+ title = "Fully relativistic pseudopotential formalism under an
+ atomic orbital basis: spin-orbit splittings and
+ magnetic anisotropies",
+ journal = "Journal of Physics: Condensed Matter",
+ volume = "24",
+ number = "8",
+ pages = "086005",
+ URL = "http://stacks.iop.org/0953-8984/24/i=8/a=086005",
+ year = "2012",
+}
+
+@Article{canning00,
+ title = "Parallel Empirical Pseudopotential Electronic
+ Structure Calculations for Million Atom Systems",
+ journal = "Journal of Computational Physics",
+ volume = "160",
+ number = "1",
+ pages = "29--41",
+ year = "2000",
+ note = "",
+ ISSN = "0021-9991",
+ doi = "http://dx.doi.org/10.1006/jcph.2000.6440",
+ URL = "http://www.sciencedirect.com/science/article/pii/S0021999100964404",
+ author = "A. Canning and L. W. Wang and A. Williamson and A.
+ Zunger",
+}
+
+@Article{oliveira08,
+ title = "Generating relativistic pseudo-potentials with
+ explicit incorporation of semi-core states using {APE},
+ the Atomic Pseudo-potentials Engine",
+ journal = "Computer Physics Communications",
+ volume = "178",
+ number = "7",
+ pages = "524--534",
+ year = "2008",
+ note = "",
+ ISSN = "0010-4655",
+ doi = "http://dx.doi.org/10.1016/j.cpc.2007.11.003",
+ URL = "http://www.sciencedirect.com/science/article/pii/S0010465507004651",
+ author = "Micael J. T. Oliveira and Fernando Nogueira",
+ keywords = "Pseudo-potential",
+ keywords = "Electronic structure",
+ keywords = "Density functional",
+}
+