@article{5681,
      author        = "David S. Wile",
      title         = "{Adding relational abstraction to programming languages}",
      pages         = "vol. 15 (no 4), pp. 125-136",
      year          = "1990",
      note          = "Parue dans : ACM SIGSOFT Software Engineering Notes vol.
                       15 (no 4), pp. 125-136.",
}