@article{104050,
      author = {Ibrekk, H.O. and Holtan, H. and Hauan, E.},
      url = {http://digitallibrary.un.org/record/104050},
      title = {Lake Mjosa : case study /},
      publisher = {UN,},
      recid = {104050},
      pages = {13 p. :},
      address = {Geneva :. 1990-09-19},
      year = {1991},
      month = {Sep},
}