@article {5579,
	title = {Classical and quantum ordering of protons in cold solid hydrogen under megabar pressures},
	year = {2013},
	doi = {10.1088/0953-8984/25/8/085402},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/23360786},
	author = {Xin-Zheng Li and Brent Walker and Matthew I.J. Probert and Chris J. Pickard and Richard J. Needs and Angelos Michaelides}
}
