BÉDA, Gyula. INTRINSIC VARIABLES OF CONSTITUTIVE EQUATION Periodica Polytechnica Mechanical Engineering, [S. l.], v. 33, n. 1-2, p. 9–14, 1989. Disponível em: https://www.pp.bme.hu/me/article/view/5625. Acesso em: 17 may. 2025.