@misc{Chopin_Fryderyk_(1810-1849)_2me,
 author={Chopin, Fryderyk (1810-1849)},
 howpublished={online},
 publisher={Gustaw Sennewald},
 publisher={J. Jurgenson},
 publisher={P. Ûrgenson},
 language={pol},
 language={rus},
 title={2me Nocturne : Op. 9 No. 2},
 type={druk muzyczny},
 keywords={nuty 19 w.},
}