@article{243398,
      url = {http://digitallibrary.un.org/record/243398},
      title = {Developments and prospects of gas resources from tight  formations : replies to the questionnaire /},
      publisher = {UN,},
      recid = {243398},
      pages = {2 p.},
      address = {Geneva :. 1997-05-06},
      year = {1997},
      month = {May},
}