1. Sternberg, E., “Three-Dimensional Stress Concentration in the Theory of Elasticity,”Appl. Mech. Rvw.,11 (1),1–4 (1958).
2. Racke, H. H., “Räumliche Sapnnungsbestimung on durchsichitigen modellen mittels der Derformation Kleiner Kugeleinschlusse,”Forsch. Ge Ing. Wes.,21 (5),133–144 (1955).
3. McGinnis, G. E., “Stress Concentration at a Void Near One Surface of an Infinite Slab in Uniaxial Stress Field,” unpublished M.S. Thesis, University of Pittsburgh (1960).
4. Pih, H., “Three-dimensional Photoelastic Investigations of Circular Cylinders with Spherical Cavities in Axial Loading,”Experimental Mechanics,5 (3),90–96 (1965).
5. Golecki, J., “A Sphere Weakened by a Concentric Inclusion of Different Elastic Properties Under Concentrated Loads,”Arch. Mech. Stos.,9 (3),301–317 (1957).