3Stenphen P. Schneider. Axially Loaded Concrete - Filled Steel Tubes [J]. Journal of StructuralEngineering, 1998(10) :1125 - 1138.
4Elremaily A, Azizinamini A. Behavior and Strength of Circular Concrete - Filled Tube columns [J]. Journal of Constructional Steel Research, 2002 ( 7 ) : 1567 - 1591.
5J. B. Mander, M. J. N. Theoretical Stress - Strain Concrete[J]. Journal of 1988 (3) : 1804 - 1826. Priestley, R. Park. . Mode l for Confined Structural Engineering,.