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2. The axisymmetric problem of circular cylindrical shell made of materials with different stiffness in tension and compression;Ambartsumyan;lzvestiya Akademii Nauk SSSR, Mekhanika.,1965
3. Basic equations in the theory of elasticity for materials with different stiffness in tension and compression;Ambartsumyan;Inzhenernyi Zhurnal, Mekanika Tverdogo Tela.,1966
4. Theory of multimodulus elasticity;Ambartsumyan;Inzhenernyi Zhurnal, Mekanika Tverdogo Tela.,1966
5. Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-point Loading);ASTM,2002