Zhao J- chun, Liu S- hong, Zhang J- feng. Personalized Distance Learning System based on Sequence Analysis Algorithm. Int. J. Onl. Eng. [Internet]. 2015 Aug. 31 [cited 2024 May 1];11(7):pp. 33-36. Available from: https://online-journals.org/index.php/i-joe/article/view/4764