Hawkins, N.M. <br/><br/>
Strength and behavior of two-span continuous prestressed co-ncrete beams / by N.M. Hawkins, M.A. Sozen and C.P. Siess 

 - Urbana, Illinois : University of Illinois, Department of Civil Engineering 
 - [413] p. 
 - 225 Civil engineering studies. Structural research series ; no.- .