Read the good article by Pierre Boulez in "Releve d'apprentis" (1951)
about this music.
There is two articles by Jamary Oliveira in the review ART (Revista
da Escola de Musica e Artes Cenicas da UFBA - Universidade Federal da
Bahia/Brazil), published in 1983, that analyse various aspects of this
composition.
Other article in "Pour comprendre les musiques d'aujourd'hui" (1968) by
Henry Barraud.
Best regards.
Edson Tadeu Ortolan
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