NguenB. (1997) “Convergence rates and finite-dimensional approximation for a class of ill-posed variational inequalities”, Ukrains’kyi Matematychnyi Zhurnal, 49(5), pp. 629–637. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5043 (Accessed: 24November2024).