%0 Journal Article
%T How to make color light signals more effective
%J Railway system controls
%D 1972
%A Cox, Jennifer
%V 3
%N 3
%P 20-27
%X <p>[Abstract unavailable]</p><p>Language: en</p>
%G en
%I 
%@ 0096-2309
%U http://dx.doi.org/