Derr, Ellwood: Mozart's transfer of the vocal "fermata sospesa" to his piano-concerto first movements. . In: Bericht über den Internationalen Mozart-Kongreß, Salzburg 1991. Jg.1991, S.155163
 

Bericht über den Internationalen Mozart-Kongreß, Salzburg 19911Mozart's transfer of the vocal "fermata sospesa" to his piano-concerto first movements