Zamani, N. ., . Sayedsadeghi, M. . Bijan-Zadeh, and K. . Ahmadi-Amoli. “ON Functors D_d (-) and D_d (M,-)”. Scientific Journal of Pure and Applied Sciences, vol. 3, no. 7, July 2014, pp. 622-8, http://sjournals.com/index.php/sjpas/article/view/1313.