@article {Himmetoglu2014,
	title = {Hubbard-Corrected DFT Energy Functionals: The LDA + U Description of Correlated Systems},
	journal = {International Journal of Quantum Chemistry},
	volume = {114},
	number = {1},
	year = {2014},
	month = {jan},
	pages = {14–49},
	doi = {10.1002/qua.24521},
	author = {Himmetoglu, Burak and Floris, Andrea and de Gironcoli, Stefano and Cococcioni, Matteo}
}
