@Article{spirtes1993,
  Title                    = {Causation, Prediction and Search},
  Author                   = {P. Spirtes and C. Glymour and R. Scheines},
  Journal                  = lns,
  Year                     = {1993},

  Address                  = {New York},
  Claves                   = {,apren-rb,},
  Publisher                = {Springer-Verlag},
  Tema                     = {ISBN 0-387-97979-4}
}