@techreport{Linz1999,
author = {Linz, J.J. and Montero, J.R.},
title= {The party systems of Spain: Old cleavages and new challenges},
year = {1999},
publisher = {Center for Advanced Study in the Social Sciences, Juan March Institut},
address = {Madrid},
number = {Estudio/Working paper 1999/138},
}