1. Breen J. and Naaman A. (1990). External prestressing in bridges. American Concrete Institute Detroit Mich.
2. Grant A. (1975). “Incremental launching of concrete structures.” ACI J. 395–402.
3. Muller J. M. and Podolny Jr. W. (1982). Construction and design of prestressed concrete segmental bridges. John Wiley and Sons Inc. New York N.Y.