Hasanpoor M, Soleymanpour Omran M, Hafezian M. Validation of the effectiveness of learning in the virtual education system of Bojnord universities. JAYPS [Internet]. 2023 Mar. 19 [cited 2024 Nov. 23];3(3):440-51. Available from: https://journals.kmanpub.com/index.php/jayps/article/view/1070