KholyavkaO. T. (2014) “Hyperbolic Variational Inequality of the Third Order with Variable Exponent of Nonlinearity”, Ukrains’kyi Matematychnyi Zhurnal, 66(4), pp. 518–530. Available at: http://umj.imath.kiev.ua/index.php/umj/article/view/2154 (Accessed: 5December2020).