@Article{oliveira_et_al:DARTS.6.2.8,
  author =	{Oliveira, Bruno C. d. S. and Shaobo, Cui and Rehman, Baber},
  title =	{{The Duality of Subtyping (Artifact)}},
  pages =	{8:1--8:6},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2020},
  volume =	{6},
  number =	{2},
  editor =	{Oliveira, Bruno C. d. S. and Shaobo, Cui and Rehman, Baber},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.6.2.8},
  URN =		{urn:nbn:de:0030-drops-132051},
  doi =		{10.4230/DARTS.6.2.8},
  annote =	{Keywords: DuoTyping, OOP, Duality, Subtyping, Supertyping}
}