@article{lauver2000mass,
  title = {Mass balance for wastewater nitrogen in the Central Arizona–Phoenix ecosystem}
  author = {Lauver, Lisa; Baker, Lawrence A},
  journal = {Water Research},
  url = {http://www.sciencedirect.com/science/article/pii/S0043135499003553},
  doi = {10.1016/S0043-1354(99)00355-3},
  year = {2000}
}