Authors Peter van Ormondt Date (dd-mm-yyyy) 2019-02-01 Title Volledigheid en Onvolledigheid Journal Pythagoras Volume 58 Publication Year 2019-02-01 Pages 26-26 Issue number 4 Document type Article Permalink https://hdl.handle.net/11245.1/9bfa4732-cfc1-44c3-96f2-de73dedefb60