@book{Knepper2004, author = {Knepper, Ludger}, title = {Aufbau eines Benchmark-Systems f{\"u}r operative Unternehmensprozesse}, address = {FH Aachen}, year = {2004}, language = {de} } @book{Knepper2004, author = {Knepper, Ludger}, title = {Auslegung und Konstruktion von Hallentorantrieben}, address = {FH Aachen}, year = {2004}, language = {de} }