Elias, Helena. “From Squares to Walls: Contemporary Murals of OSGEMEOS, Nunca and Bicicleta Sem Freio in Lisbon”. Street Art & Urban Creativity 1, no. 2 (December 20, 2015): 42–48. Accessed April 19, 2025. https://visualcompublications.es/SAUC/article/view/5611.