@InProceedings{aamer_et_al:LIPIcs.ICDT.2021.8,
  author =	{Aamer, Heba and Van den Bussche, Jan},
  title =	{{Input-Output Disjointness for Forward Expressions in the Logic of Information Flows}},
  booktitle =	{24th International Conference on Database Theory (ICDT 2021)},
  pages =	{8:1--8:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-179-5},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{186},
  editor =	{Yi, Ke and Wei, Zhewei},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICDT.2021.8},
  URN =		{urn:nbn:de:0030-drops-137167},
  doi =		{10.4230/LIPIcs.ICDT.2021.8},
  annote =	{Keywords: Composition, expressive power, variable substitution}
}