@article{1383658,
      author = {Würsig, Bernd G., and Thewissen, J. G. M., and Kovacs,  Kit M.,},
      url = {http://library.usi.edu/record/1383658},
      title = {Encyclopedia of marine mammals /},
      recid = {1383658},
      pages = {1 online resource (1,195 pages) :},
}