Demir Sağlam, S. (2021) “The optimality principle for second-order discrete and discrete-approximate inclusions: The optimality principle for second-order discrete and discrete-approximate inclusions”, An International Journal of Optimization and Control: Theories & Applications (IJOCTA), 11(2), pp. 206–215. doi: 10.11121/ijocta.01.2021.001056.