%0 Journal Article %T Photovoltaic solar energy, spearheading Germany¡¯s renewable energy policy: an example to others %A Palz W. %J EPJ Photovoltaics %D 2012 %I EDP Sciences %R 10.1051/epjpv/2012003 %U http://dx.doi.org/10.1051/epjpv/2012003