Santaoja K. Derivation of the normality rule for time-dependent deformation using the principle of maximal rate of entropy production. Arch. Mech. [Internet]. 2003 Nov. 1 [cited 2026 Jan. 17];55(5-6):501-18. Available from: http://am.ippt.gov.pl/index.php/am/article/view/v55p501