@article{1365234,
      recid = {1365234},
      author = {Broer, H. W.},
      title = {Unfoldings and bifurcations of quasi-periodic tori /},
      pages = {1 online resource (189 pages) :},
      note = {"January 1990, volume 83, number 421 (third of 6  numbers)."},
      url = {http://library.usi.edu/record/1365234},
}