@article {10765,
	title = {Pseudospin SU(2)-symmetry breaking, charge-density waves and superconductivity in the Hubbard model},
	journal = {Journal of Physics Condensed Matter},
	year = {1996},
	pages = {4805-4812},
	doi = {10.1088/0953-8984/8/26/012},
	author = {Shun-Qing Shen and X.C. Xie}
}
