@article{813087,
      author = {Hamm, Mark S., and Spaaij, R. F. J.},
      url = {http://library.usi.edu/record/813087},
      title = {The age of lone wolf terrorism /},
      doi = {https://doi.org/10.7312/hamm18174},
      recid = {813087},
      pages = {1 online resource (x, 322 pages):},
}