@misc{fjaerestad2004orbital,
  title={Orbital currents and charge density waves in a generalized Hubbard ladder},
  author={J. O. Fjaerestad and J. B. Marston and U. Schollwoeck},
  year={2004},
  eprint={cond-mat/0412709},
  archivePrefix={arXiv},
  primaryClass={cond-mat.str-el},
  doi={10.1016/j.aop.2005.08.005},
  url={https://arxiv.org/abs/cond-mat/0412709}
}