6George W, Arthur H N. Design of Concrete Structures (9th Edition). McGraw-Hill Book Company. New York, 1979.
7ACI committee435. Proposed revisions by committee435 to ACI building code and commentary provisions on deflections. ACI Journal, 1978,75(6).
8Branson D E. Discussion of “Proposed Revision of ACI 318-63:Building Code Requirement for Reinforced Concrete” by ACI committee 318. ACI Journal, 1970,67 (9).
9Andrzej B A, Alina T K. Experimental analysis of limit states in a sixpanel waffle fiat-plate structure. ACI Journal, 1986,83 (6).