1. A. S. Avetisyan, ?Studying stress concentration in an infinite plane weakened by a hole in the form of a rhombus,? Uch. Zap. Erevansk. Arm. Ped. In-ta, Seriya Matem. Nauk, No. 2 (1963).
2. A. S. Avetisyan, ?Stress concentration around a rhombic hole, with consideration given to the physical nonlinearity of the material,? Prikladnaya Mekhanika,3, No. 10 (1966).
3. A. N. Guz', G. N. Savin, and I. A. Tsurpal, ?Stress concentration around curvilinear holes in a physically nonlinear elastic plate,? Arch. Mech. Stos.,16, No. 4 (1964).
4. H. Kauderer, Nonlinear Mechanics [Russian translation], IL, Moscow (1961).
5. N. I. Muskhelishvili, Certain Fundamental Problems from the Mathematical Theory of Elasticity [in Russian], Izd-vo AN SSSR, Moscow (1954).