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4. 3. O. L. Kipnis, V. I. Ostryk, "The receding of an elastic strip and a rigid base on semi-infinite contact area," Visn. Kyiv Univ., Ser. Fiz.-Mat. Nauky, Issue 4, 75-78 (2011) (in Ukrainian).
5. 4. N. I.-V. Manko, A. K. Privarnikov, "Detachment of an elastic layer from multi-layered base under normal load," Visn. Donetsk. Univ., Ser. A. Pryrodn. Nauky, No. 1, 49-53 (2002) (in Ukrainian).