Pavlenko, V. N. “On Solvability of Variational Inequalities With Discontinuous Semimonotone Operators”.
Ukrains’kyi Matematychnyi Zhurnal
, vol. 45, no. 3, Mar. 1993, pp. 443–447,
https://umj.imath.kiev.ua/index.php/umj/article/view/5829
.