Plavšić M, Jarić J. The Principle of Virtual Work and the Constitutive Equations in Generalized Theories of Elasticity. Eng. Trans. [Internet]. 1974 Jun. 30 [cited 2026 Jan. 17];22(2):181-21. Available from: http://et.ippt.gov.pl/index.php/et/article/view/2401