Hognestad, Eivind. <br/><br/>
High strength bars as concrete reinforcement part 2: contro-l of flexural cracking / by Eivind Hognestad. 

 - Skokie, Illinois : ies, Development Department 
 - [26] p. 
 - Bulletin D53 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .