Authentic German Liberalism of the 19th Century (页面存档备份,存于互联网档案馆) by RalphRaico "The term came into use in 1873, when the scientist and Prussian liberal
Wandel zu einer „Reformpartei“. Tectum-Verlag, 2004, ISBN 3-8288-8670-1 RalphRaico: Die Partei der Freiheit. Studien zur Geschichte des deutschen Liberalismus