@book {R{\"u}thing 1967a, title = {Der Kart{\"a}user Heinrich Egher von Kalkar (1328-1408)}, series = {Ver{\"o}ffentlichungen des Max-Planck-Instituts f{\"u}r Geschichte, 18 / Studien zur Germania Sacra}, number = {8}, year = {1967}, pages = {297}, address = {G{\"o}ttingen}, keywords = {biographiae, Henricus Egher de Calcaria O.Cart. (biographia)}, author = {Heinrich R{\"u}thing} }