@article{798644,
      author = {Askenazy, Philippe, and Bellmann, Lutz, and Bryson, Alex,  and Moreno-Galbis, Eva,},
      url = {http://library.usi.edu/record/798644},
      title = {Productivity puzzles across Europe /},
      recid = {798644},
      pages = {1 online resource :},
}