William Powhida discussed in profile of Mega-Collector Dakis Joannou ⟶
https://www.artsy.net/article/artsy-editorial-mega-collector-dakis-joannou-turned-remote-greek-island-art-mecca
https://www.artsy.net/article/artsy-editorial-mega-collector-dakis-joannou-turned-remote-greek-island-art-mecca