found: His Quadras populares, 1980:t.p. (Zeca Afonso)
found: Salvador, J.A. Livra-te do medo, estórias & andanças do Zeca Afonso, c1984:t.p. (Zeca Afonso) p. 15 (José Afonso, b. 8/2/1929, Aveiro, Portugal)
found: José Afonso, o rosto da utopia, c1994:p. 7 (Afonso Zeca, pseudonym) p. 133 (d. 2-24-87)
found: New Grove dict. of mus. WWW site, Oct. 13, 2004:Portugal/Popular music/Political song (Political song (canção de intervenção) played an important role in protesting against the totalitarian regime of the estado novo. José Afonso (1929-87) was one of its main protagonists)