BibTex format
@article{Pugnaloni:2010:10.1103/PhysRevE.82.050301,
author = {Pugnaloni, LA and Sanchez, I and Gago, PA and Damas, J and Zuriguel, I and Maza, D},
doi = {10.1103/PhysRevE.82.050301},
journal = {PHYSICAL REVIEW E},
title = {Towards a relevant set of state variables to describe static granular packings},
url = {http://dx.doi.org/10.1103/PhysRevE.82.050301},
volume = {82},
year = {2010}
}