@article{721814,
      author = {Hillen, Thomas, and Leonard, I. Ed., and Van Roessel,  Henry,},
      url = {http://library.usi.edu/record/721814},
      title = {Partial differential equations theory and completely  solved problems / [electronic resource] :},
      recid = {721814},
      pages = {1 online resource (694 pages)},
}