@article{PurBot:03,
  journal = {Studia Univ. Babe\c s-Bolyai, Ser. Mathematica},
  volume = {48},
  title = {Attributive causality},
  author = {Purdea, Ioan and Both, Nicolae},
  year = 2003,
  pages = {95--98},
  number = {1},
}