@misc{Ludwig_van_Beethoven_Marsch,
 author={Ludwig van Beethoven},
 howpublished={online},
 publisher={B. Schott’s Söhne},
 language={ger},
 title={Marsch aus der Oper : Fidelio},
 type={muzykalia},
 keywords={Beethoven, Ludwig van (1770-1827)},
}