@article{109248,
      recid = {109248},
      author = {Stevens, Peter S.},
      title = {Handbook of regular patterns : an introduction to symmetry  in two dimensions /},
      publisher = {MIT Press,},
      address = {Cambridge, Mass. :},
      pages = {400 p. :},
      year = {1981},
      note = {Includes index.},
      url = {http://library.usi.edu/record/109248},
}