@misc{Ries_Ferdinand_Polonaise,
 author={Ries, Ferdinand},
 howpublished={online},
 publisher={Leo's Verlagshandlung},
 title={Polonaise à quatre mains : Oeuvre. 93},
 type={muzykalia},
 keywords={druk muzyczny, nuty, Ries, Ferdinand (1784-1838)},
}