P. Chaudhuri and S. Ray, “A Note on the Crack Problem for a Nonhomogeneous Plane”, Eng. Trans., vol. 44, no. 3-4, pp. 349–360, Dec. 1996, Accessed: Jan. 17, 2026. [Online]. Available: http://et.ippt.gov.pl/index.php/et/article/view/1467