Nguyen Thi Thanh Tu, Vu Dinh Minh, Nguyen Thanh Tung and Nguyen Minh Quy 2017. RESEARCHING AND BUILDING AN OPEN SOURCE ANTI-SPAM (SPAM-AVOIDANCE) FRAMEWORK FOR UNIVERSITY’S EMAIL SYSTEM. UTEHY Journal of Applied Science and Technology. 12, (Jan. 2017), 83-88.