+@Article{ceperley80,
+ title = "Ground State of the Electron Gas by a Stochastic
+ Method",
+ author = "D. M. Ceperley and B. J. Alder",
+ journal = "Phys. Rev. Lett.",
+ volume = "45",
+ number = "7",
+ pages = "566--569",
+ numpages = "3",
+ year = "1980",
+ month = aug,
+ doi = "10.1103/PhysRevLett.45.566",
+ publisher = "American Physical Society",
+}
+
+@Article{perdew81,
+ title = "Self-interaction correction to density-functional
+ approximations for many-electron systems",
+ author = "J. P. Perdew and Alex Zunger",
+ journal = "Phys. Rev. B",
+ volume = "23",
+ number = "10",
+ pages = "5048--5079",
+ numpages = "31",
+ year = "1981",
+ month = may,
+ doi = "10.1103/PhysRevB.23.5048",
+ publisher = "American Physical Society",
+}
+