2017
In her 2017 doctoral thesis, "Sound Art: Discourses of Definition in the Contemporary Artworld", submitted to Newcastle University, Aruna Devi Bhaugeerutty identifies Max Neuhaus as the pivotal figure who established the terminology and spatial boundaries of the discipline.
https://theses.ncl.ac.uk/jspui/bitstream/10443/4092/4/BhaugeeruttyAD%202018.pdf