Parties and party systems : [elektronický zdroj] a bibligraphic guide to the literature on parties and party systems in Europe since 1945 on CD-ROM / Stefano Bartolini, Daniele Caramani and Simon Hug.    Bartolini, Stefano.Parties and party systems.  London :  Sage Publications,  [1998] . 1 elektronický optický disk (CD-ROM)