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📜Roth, Michel. 2024. Aufs Spiel Gesetzt: Eine spieltheoretische Untersuchung indeterminierter Musik. Berlin: wolke verlag.
https://www.wolke-verlag.de/wp-content/uploads/2024/08/Roth_Aufs_Spiel_gesetzt_Ebook_2024.pdf
A dissertation from 2022 that was published in 2024, with this later, presumably unchanged version, referenced here. For length, this one beats its peers with 524 pages. Thematically very much on point, game studies and new music combined. The work is in German, done at the University of Basel, and in its abundant contents the Swiss perspective may be one of distinguishing features, e.g. works of Dieter Roth or Hans Wüthrich. 32 pages of bibliography may be useful regardless of possible language barrier.
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