Spaaij, Ramon and Viñas, Carles (2013) Political Ideology and Activism in Football Fan Culture in Spain: A View From the Far Left. Soccer and Society, 14 (2). pp. 183-200. ISSN 1466-0970 (print) 1743-9590 (online)

Viñas, Carles and Spaaij, Ramon (2006) Medidas y políticas de intervención acerca del racismo y la xenofobia en el fútbol español (Measures and Policies Targeting Racism and Xenophobia in Spanish Football). Sistema: Revista de ciencias sociales, 192 (1). pp. 51-76. ISSN 0210-0223

Spaaij, Ramon and Viñas, Carles (2005) Passion, politics and violence: A socio‐historical analysis of Spanish ultras. Soccer and Society, 6 (1). pp. 79-96. ISSN 1466-0970 (print) 1743-9590 (online)

Spaaij, Ramon and Viñas, Carles (2005) ‘A por ellos!’: racism and anti-racism in Spanish football. International Journal of Iberian Studies, 18 (3). pp. 141-164. ISSN 1364-971X (print) 1758-9150 (online)