M. Ostoja-Starzewski, “On the admissibility of an isotropic, smooth elastic continuum”, Arch. Mech., vol. 57, no. 4, pp. 345–355, Jul. 2005, Accessed: Nov. 19, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v57p345