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jstor.org
Holder, Brian (2013). "Varèse's Drum: The Tarole in Ionisation". Tempo. 67 (266): 65—68. ISSN0040-2982. JSTOR43932537.
Schuller, Gunther (Summer 1965). "Conversation with Varèse". Perspectives of New Music. 3 (2): 34. doi:10.2307/832501. JSTOR832501.
Wilheim, András (1977). "The Genesis of a Specific Twelve-Tone System in the Works of Varèse". Studia Musicologica Academiae Scientiarum Hungaricae. T. 19 (Fasc. 1/4): 203—226. doi:10.2307/901798. JSTOR901798.