4. The Amenda version was first published, with extensive commentary, in Hans Josef Wedig, Beethovens Streichquartette op. 18 Nr. 1 und seine erste Fassung. Veröffentlichungen des Beethoven-hauses in Bonn, ed. Ludwig Schiedermair, vol. 2 (Bonn: Beethovenhaus, 1922). More recent studies are Janet Levy, Beethoven’s Compositional Choices: The Two Versions of op. 18, no. 1, First Movement (Philadelphia: University of Pennsylvania Press, 1982); and David H. Smyth, “Beethoven’s Revision of the Scherzo of Opus 18, No. 1,” in Beethoven Forum, 1 (1992): 147–163. See also Ludwig van Beethoven: A Sketchbook from the Summer of 1800, ed. Richard Kramer (Bonn: Beethoven-Haus, 1996), II: 19–21.