Helmut Lachenmann, Aaron Cassidy
Helmut Lachenmann, “The 'Beautiful' in Music Today,” Tempo, 135. (Dec., 1980): 20-24. https://www.jstor.org/stable/946043
Helmut Lachenmann, “Sound Types of New Music,” Trans. Hans Thomalla from “Klangtypen Der Neuen Musik,” in Musik als existentielle Erfahrung, ed. Josef Häusler (Wiesbaden: Breitkopf & Härtel, 1996 [1990]), 1-20.
Alastair Williams, "Mixing with Mozart: Aesthetics and Tradition in Helmut Lachenmann’s Accanto", Twentieth-Century Music, vol. 8, no. 1 (2012): 71–97.
Helmut Lachenmann, Accanto, Kinderspiel, Kontrakadenz
Aaron Cassidy, Second String Quartet
Martin Scherzinger, “Deconstructive Thought in the Music of Helmut Lachenmann: An Historical Perspective,” English version of “Dekonstruktives Denken in der Musik von Helmut Lachenmann,” in Musik-Konzepte Helmut Lachenmann (et+k, 2009).
Paul Steenhuisen, "Interview with Helmut Lachenmann-Toronto, 2003", Contemporary Music Review,23:3 (2004): 9–14.
Aaron Cassidy, Constraint Schemata, Multi-axis Movement Modeling, and Unified, Multiparametric Notation for Strings and Voices. Journal for New Music and Culture, 10 (2013).