Freksa, ChristianChristianFreksavan de Ven, JasperJaspervan de VenWolter, DiedrichDiedrichWolter0000-0001-9185-01472022-09-012022-09-0120181362-30871365-8816https://fis.uni-bamberg.de/handle/uniba/55359engFormal Representation of Qualitative Directionarticle10.1080/13658816.2017.1420794