Zamani, N. ., Sayedsadeghi, ., Bijan-Zadeh, M. ., & Ahmadi-Amoli, K. . (2014). ON functors D_d (-) and D_d (M,-). Pure and Applied Science Advances, 3(7), 622-628. Retrieved from http://www.sjournals.com/index.php/sjpas/article/view/1313