Verhoeven, G., S. Wogrin, J. Schlegel, M. Wieser, and B. Wild. “Facing a Chameleon—How Project INDIGO Discovers and Records New Graffiti”. Document | Archive | Disseminate Graffiti-Scapes, May 2023, pp. 63 -85, doi:10.48619/indigo.v0i0.703.