J. Nowacki, “Electro-elastic fields of a plane thermal inclusion in isotropic dielectrics with polarization gradient”, Arch. Mech., vol. 56, no. 1, pp. 33–57, Jan. 2004, Accessed: Jan. 17, 2026. [Online]. Available: http://am.ippt.gov.pl/index.php/am/article/view/v56p33