+
+@Article{robertson90,
+ author = "I. J. Robertson and M. C. Payne",
+ title = "k-point sampling and the k.p method in pseudopotential
+ total energy calculations",
+ journal = "Journal of Physics: Condensed Matter",
+ volume = "2",
+ number = "49",
+ pages = "9837",
+ URL = "http://stacks.iop.org/0953-8984/2/i=49/a=010",
+ year = "1990",
+ notes = "kp method",
+}
+
+@Article{lange11,
+ volume = "84",
+ journal = "Phys. Rev. B",
+ author = "Bj{\"o}rn Lange and Christoph Freysoldt and J{\"o}rg
+ Neugebauer",
+ month = aug,
+ URL = "http://link.aps.org/doi/10.1103/PhysRevB.84.085101",
+ doi = "10.1103/PhysRevB.84.085101",
+ year = "2011",
+ title = "Construction and performance of fully numerical
+ optimum atomic basis sets",
+ issue = "8",
+ publisher = "American Physical Society",
+ numpages = "11",
+ pages = "085101",
+ notes = "quamol, basis set, for planc",
+}
+