Kowalczyk-Gajewska, K., and J. Ostrowska-Maciejewska. “The Influence of Internal Restrictions on the Elastic Properties of Anisotropic Materials”. Archives of Mechanics 56, no. 3 (May 1, 2004): 205–232. Accessed January 17, 2026. http://am.ippt.gov.pl/index.php/am/article/view/v56p205.