P. Guerra and A. S. Oliveira,  "Post-dictatorships, punk, experimentation and cosmopolitanism in the Iberian space", in Unearthing the Music. Footnotes to Sonic Resistance in Non-democratic Europe (1950-2000), Rui Pedro Dâmaso, Alexander Pehlemann, and Lucia Udvardyova, Ed., Leipzig, Spector Books, 2025, pp. 248-289