Nineteenth-Century Piano Music, edited by R. Larry Todd; Twentieth-Century Piano Music, by David Burge
October 1, 1991- PDF https://www.jstor.org/stable/40374133
The Decline of Serialism and the New Romanticism: Control and Chance in the New Music
October 1, 1979- PDF https://www.jstor.org/stable/40351757
Contemporary Music as Represented in Stockhausen's Plus-Minus
October 1, 1977- PDF https://www.jstor.org/stable/40373886
Five Centuries of Keyboard Music, by John Gillespie
October 1, 1967- PDF https://www.jstor.org/stable/40373204