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2. Naaman AE. New Methodology for the analysis of beams prestressed with external or unbonded tendons. In: External prestressing in bridges, SP-120, American Concrete Institute, Detroit; 1990: p. 339–54.
3. Effect of span-depth ratio on the ultimate steel stress in unbonded prestressed concrete members;Harajli;ACI Struct J,1990
4. Stress at ultimate in unbonded post-tensioning Tendons—Part 1: Evaluation of the state-of-the-art;Naaman;ACI Struct J,1991
5. Stress at ultimate in unbonded post-tensioning tendons—Part 2: Proposed methodology;Naaman;ACI Struct J,1991