TY - CHAP TI - The Everlasting Dawn of Educational Brokers - A Search for Key Design Principles AF - First International Workshop on Learning Object Discovery & Exchange (LODE'07) PP - Crete UR - http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-311/paper03.pdf PY - 2007-01-01 AU - Simon, Bernd AU - Oberhumer, Petra AU - Kristöfl, Robert ER -