?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Martin&rft.aulast=Heidecker&rft.au=+Heidecker+Martin&rft.isbn=978-963-648-031-8&rft.date=2024&rft.title=%22The+3+musketeers%22+-+a+musical+production+at+the+Freiburg+University+of+Education&rft.genre=bookitem