Elstner, Richard C. <br/><br/>
Laboratoy investigation of rigid frame failure / by Richard- C. Elstner and Eivind Hognestad. 

 - Skokie, Illinois : atories, Development Department 
 - [32] p. 
 - Bulletin D10 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .
<br/><br/> "Authorized reprint form copyrighted Journal of the America-n concrete Institute January 1957, Proceedings Vol. 53. p. - 637."