@article{10.4159/harvard.,
      author = {Hansen, Peter H.},
      url = {http://library.usi.edu/record/701483},
      title = {The summits of modern man mountaineering after the  Enlightenment / [electronic resource] :},
      publisher = {Harvard University Press,},
      number = {10.4159/harvard.},
      recid = {701483},
      pages = {1 online resource (x, 380 pages) :},
      address = {Cambridge, Massachusetts :},
      year = {2013},
}