The German aspects puzzles me, not sure if the implied German School exists.
Other German Lisp (and related) implementations: CLISP (a Common Lisp written in C+Lisp by Haible/Stoll), CLICC (a CL to C compiler by Goerigk/Hoffmann/Knutzen), Eu2C (an EuLisp to C compiler, from a Fraunhofer Institute), Chicken Scheme (Winkelmann), ...