@article{1365746,
      note = {"November 1997, volume 130, number 620 (end of volume)."},
      author = {Guba, Victor, and Sapir, Mark,},
      url = {http://library.usi.edu/record/1365746},
      title = {Diagram groups /},
      recid = {1365746},
      pages = {1 online resource (130 pages) :},
}