You tried going to https://music.ubc.ca/library/2016/11/25/roeder-john-and-scott-cook-2006-triadic-transformation-and-parsimonious-voice-leading-in-some-interesting-passages-by-gavin-bryars-intgral-2043-67
, and it doesn't exist. All is not lost! You can search for what you're looking for.