1. Stress singularities resulting from various boundary conditions in angular corners of plates in extension;Williams;J. appl. Mech.,1952
2. Remarks on the singularity of elastic solutions near corners;Kalandiia;Prikl. Mat. Mekh.,1969
3. On coefficients and asymptotity of solutions of elliptic boundary value problems in the neighborhood of singular points;Mazda;DAN SSSR,1974
4. Mathematical Methods of the Theory of Elasticity;Parton,1984
5. Mathematical Problems of Crack Theory;Morozov,1984