“…One is closely related to Knaster-Kuratowski-Mazurkiewicz theorems and fixed point theorems, which are used by Panagiotopulos et al [29], Repovs and Varga [30], Costea and Radulescu [10], and Zhang and He [41] to study stationary hemivariational inequalities and systems of stationary hemivariational inequalities. The other is closely related to surjectivity theorems concerning pseudomonotone and coercive operators, which are captured by Migorski et al [24], Carl et al [1], Naniewicz and Panagiotopulos [26], Xiao and Huang [33], and Liu [22] for various types of stationary hemivariational inequalities and evolutionary hemivariational inequalities.…”