@article{Warfield08a,
  title = {Multicausality},
  author = {John N. Warfield},
  year = {2008},
  url = {http://iospress.metapress.com/content/j224231n2715676j/},
  researchr = {https://researchr.org/publication/Warfield08a},
  cites = {0},
  citedby = {0},
  journal = {Transactions of the SDPS},
  volume = {12},
  number = {2},
  pages = {27-29},
}