J. P. Perdew, K. Burke, and Y. Wang, “Generalized gradient approximation for the exchange-correlation hole of a many-electron system,” Phys. Rev. B, 54 (1996) 16533-39. DOI: 10.1103/PhysRevB.54.16533
J. P. Perdew, K. Burke, and Y. Wang, “Generalized gradient approximation for the exchange-correlation hole of a many-electron system,” Phys. Rev. B, 54 (1996) 16533-39. DOI: 10.1103/PhysRevB.54.16533
