Pham Quy Muoi, Van Ba Cong, Duong Xuan Hiep and Phan Duc Tuan (2018) “SOME NEW RESULTS IN THE EXISTENCE AND UNIQUENESS OF THE SOLUTION TO THE VARIATIONAL INEQUALITY PROBLEM AND ITS APPLICATION”, UED Journal of Social Sciences, Humanities and Education, 8(5), pp. 1-6. doi: 10.47393/jshe.v8i5.232.