Zheng Y. Design of a Blockchain-Based e-Portfolio Evaluation System to Assess the Education and Teaching Process. Int. J. Emerg. Technol. Learn. [Internet]. 2021 Mar. 16 [cited 2024 Nov. 22];16(05):pp. 261-280. Available from: https://online-journals.org/index.php/i-jet/article/view/21081