C. A. Cunha,  ""'Mais   CDU!   Mais   Portugal!'  ...   Mais   PCP?   The Portuguese Communist Party at the turn of the 21st Century."", in The Crisis of Communism and Party Change. The Evolution of  West  European  Communist  and  Post-communist Parties, Botella, Joan and  Ramiro,  Luis, Ed., Barcelona, Institut de Ciencies Politiques I Sociais , 2003, pp. 97-128