@misc{Paderewski_Ignacy_Jan_(1860-1941)_Variations,
 author={Paderewski, Ignacy Jan (1860-1941)},
 howpublished={online},
 publisher={Ed. Bote & G. Bock [etc.]},
 type={druk muzyczny},
 title={Variations et fugue : Op. 23},
}