Viola Concerto, Op. Posth. (Viola and Piano Reduction). Composed by Bela Bartok (1881-1945) and B. Edited by Nelson Dellamaggiore and Peter Bart. For Piano, Viola (Viola). Boosey & Hawkes Chamber Music. 72 pages. Boosey & Hawkes #M060116421. Published by Boosey & Hawkes (HL.48011639).
This is the new revised edition prepared by Nelson Dellamaggiore and Peter Bartok in October, 2003.