1. On the strength and ductility of concrete.;Dokl Akad Nauk. SSSR,1950
2. Foppl, A. 1900. Concrete Testing. Mitt. Mech-tech Lab. Munchen, No. 27, 15–22.
3. Ingold, T. S. 1980. Reinforced Clay. Thesis, PhD, Univ. of Surrey.
4. The Pore Pressure Coefficients A and B;Geotechnique,1954
5. Yang, Z. 1972. Strength and Deformation Characteristics of Reinforced Sand. Thesis, PhD, Univ. of California at Los Angeles.