%0 Journal Article
%T John D Holter and his century valve
%A Aschoff A
%J Cerebrospinal Fluid Research
%D 2004
%I 
%R 10.1186/1743-8454-1-s1-s13
%U http://www.biomedcentral.com/content/pdf/1743-8454-1-S1-info.pdf