@misc{indiciae034468cd456c,
  title = {Factors influencing densities of non-indigenous species in the ballast water of ships arriving at ports in Puget Sound, Washington, United States},
  author = {J.R. Cordell and D. J. Lawrence and N.C. Ferm and L.M. Tear and S.S. Smith and R.P. Herwig},
  year = {2008},
  doi = {10.1002/aqc.986},
  url = {https://pubs.usgs.gov/publication/70034497},
  note = {Source identifier: 70034497}
}