@misc{Ernst_Heinrich_Wilhelm_(1814-1865)_Polonaise,
 author={Ernst, Heinrich Wilhelm (1814-1865)},
 address={Leipzig},
 howpublished={online},
 publisher={Ernst Eulenburg},
 type={druk muzyczny},
 title={Polonaise : op. 17},
 keywords={polonezy (skrzypce, fortepian), 19 w.},
}