Jörg Naumann, Friedrich Schneider,
"Interest Groups in Democracies How Influential are they ? An Empirical Ex-amination for Switzerland"
, in Public Choice, Vol. 38, Seite(n) 281-303, 1982, ISSN: 1573-7101
Original Titel:
Interest Groups in Democracies How Influential are they ? An Empirical Ex-amination for Switzerland