[1] M. Alimohammady, F. Fattahi, Existence of solutions to hemivaritional inequal-ities involving the p(x)-biharmonic operator, Electron. J. Diff. Equ., Vol. 2015(2015), 1-12.
[2] A. Ambrosetti, P.H. Rabinowitz, Dual variational methods in critical point theory and applications, J. Funct. Anal., 14 (1973), 349-381.
[3] G. Bonannoa, P. Winkert, Multiplicity results to a class of variational-hemivariational inequalities, Topological methods in nonlinear analysis,43(2)(2014), 493-516.
[4] F. H. Clarke, Optimization and nonsmooth analysis, John Wiley & Sons, New York, 1983.
[5] J. Chabrowski, Variational Methods for Potential Operator Equations, de Gruyter, 1997.
[6] N. Costea, C. Varga, Multiple critical points for non-differentiable parametrized functionals and applications to differential inclusions, Journal of Global Opti-mization, vol. 56 (2013), 399-416.
[7] G. Dai, Nonsmooth version of Fountain theorem and its application to a Dirichlet-type differential inclusion problem, Nonlinear Anal. 72 (2010), 1454-1461. doi:10.1016/j.na.2009.08.029
[8] O. Frites , T. Moussaoui, Existence of positive solutions for a variational in-equality of Kirchhoff type, Arab Journal of Mathematical Sciences, 21(2) (2015),127-135.
[9] Sh. Heidarkhani, J. Chu, F. Gharehgazlouei, A. Solimaninia, Three nontrivial solutions for Kirchhoff-type variational-hemivariational inequalities, Results in Mathematics, 68 (2015), 71-91.
[10] G. Kirchhoff, Mechanik, Teubner, Leipzig, 1883.
[11] G. Sun, K. Teng, Existence and multiplicity of solutions for a class of fractional Kirchhoff-type problem, Math. Commun. 183 19 (2014), 183-194.
[12] M. C. Wei, C. L. Tang, Existence and Multiplicity of Solutions for p(x)-Kirchhoff-Type Problem in R N , Bull. Malays. Math. Sci. Soc. (2) 36(3) (2013), 767-781.
[13] P. Winkert, On the Boundedness of Solutions to Elliptic Variational Inequalities,Set-Valued and Var. Anal. 22(4) 2014, 763-781., DOI:10.1007/s11228-014-0281-8.
[14] Q. L. Xie, X. P. Wu, C.-L. Tang, Existence of solutions for Kirchhoff type equations, Electronic Journal of Differential Equations, Vol. 2015 (2015), 1-8.
[15] M. Xiang, A variational inequality involving nonlocal elliptic operators, Fixed Point Theory and Applications, (2015),
1-9. doi:10.1186/s13663-015-0394-2
[16] Z. Yuan, L. Huang, Existence of solutions for p(x)−Kirchhoff type problems with non-smooth potentials, Electronic Journal of Differential Equations, Vol. 2015(2015), 1-18.
)