@Article{crestani1997spreading,
  author = {Crestani, F.},
  title  = {Application of Spreading Activation Techniques in Information Retrieval},
  journal = {Artificial Intelligence Review},
  year   = {1997},
  number = {6},
  url    = {http://dx.doi.org/10.1023/A:1006569829653},

  const  = {\ text}
}