BibTex format
@article{Bernasconi:2011:10.1103/PhysRevB.83.195325,
author = {Bernasconi, L and Tomic, S and Ferrero, M and Rerat, M and Orlando, R and Dovesi, R and Harrison, NM},
doi = {10.1103/PhysRevB.83.195325},
journal = {PHYSICAL REVIEW B},
title = {First-principles optical response of semiconductors and oxide materials},
url = {http://dx.doi.org/10.1103/PhysRevB.83.195325},
volume = {83},
year = {2011}
}