@Article{59372,
     author = "Szymon Paczkowski",
     title = "A Polonaise Duet for a Professor, a King and a Merchant: on Cantatas BWV 205, 205a, 216 and 216a by Johann Sebastian Bach ",
     year =  2009,
     volume =  6,
     number =  ,
     journal =  Musicology Today,
     pages =  s. 90-112,
    }