@article {Kellner 1879, title = {Gruytrode, Jacob von}, journal = {Allgemeine Deutsche Biographie}, volume = {10}, year = {1879}, note = {Elektronisch raadpleegbaar. }, pages = {71}, keywords = {biographiae, Jacobus de Gruitrode O.Cart. (biographia)}, author = {Kellner, Heinrich} }