found: Berg, A. Ecrits, 1957.
found: His Troisième vue sur les jardins interdits, 1980:t.p. (H. Pousseur)
found: Baker, 8th ed.(Pousseur, Henri (Léon Marie Thérèse); b. 6-23-29, Malmédy; Belgian composer)
found: henripousseur.net, March 9, 2009(d. March 6, 2009, Bruxelles)
found: Grove music online, Oct. 10, 2013(Pousseur, Henri (Léon Marie Thérèse); composer and theorist; studied at the Liège Conservatory, 1947-1952; taught at the University of Liège; founded the Centre de Recherches et de Formation Musicales de Wallonie in 1970)