@article {Burgener...1977, title = {Das Gebet der Einfachheit - Kart{\"a}usergebet}, journal = {Cistercienser Chronik}, volume = {84}, year = {1977}, pages = {105-108}, keywords = {modestia, oratio}, author = {Burgener, Bruno and Bl{\"u}m, Hubertus Maria} }