F. Tran, J. Stelzl, D. Koller, T. Ruh, P. Blaha:
"Simple way to apply nonlocal van der Waals functionals within all-electron methods";
Physical Review B, 96 (2017), 054103.
http://dx.doi.org/10.1103/PhysRevB.96.054103Electronic version of the publication:
http://publik.tuwien.ac.at/files/publik_260762.pdf