Heilig , R. <br/><br/>
Contribution to the theory of box-girders of arbitrary cross-sectional shape   
R. Heilig 
 - London  Cement and Concrete Association  1971 
 - 25p. 
 - C and C A Library Translation  No.145 .
<br/><br/> Translation of the paper 'Beitrag zur therie der kastentrager beliebiger querschnittsform'. Der Stahlbau, Vol.30, No.11. 1961. pp.333-349 
<br/><br/><label>Dewey Class. No.: </label>624.1772  / N711