Verhoeven, Geert J., Martin Wieser, and Massimiliano Carloni. “GRAPHIS: Visualise, Draw, Annotate, and Save Image Regions in Graffiti Photos”. goINDIGO (September 6, 2024): 72–103. Accessed October 30, 2025. https://www.journals.wisethorough.com/index.php/indigo/article/view/977.