1. J. T. Oden, Finite Elements of Nonlinear Continua, McGraw-Hill (1972).
2. D. S. Malkus, ?Finite element displacement model valid for any value of the compressibility,? Int. J. Solids Struct.,12, No. 11, 731?738 (1976).
3. Ya. S. Uflyand, Integral Transformation in Problems of the Theory of Elasticity [in Russian], Moscow (1967).
4. P. G. Forrest, Fatigue of Metals, Pergamon (1969).
5. G. Neuber, Stress Concentration [Russian translation], Moscow-Leningrad (1947).