Some graphical scores found on the web. I also found a few in Morgan’s excellent “Twentieth Century Music” (Morgan, Robert (1992). Twentieth Century Music. London: Norton & Company. pp 376-409), each as incomprehensible as the last.
If the job of language is to convey concepts and information, surely a prerequisite of a language is that it’s understood by more than one person. If not it’s doomed to become the fatuous and pretentious ramblings of a narcissist. The very point of notation is that I can take my score to a pianist in Yogyakarta and she will be able to play what I’ve written. If she can’t, my notation’s a failure.