“…[8], Liu et al [17], Matei and Micu [18], Migórski and Zeng [28], and Sofonea [37]. On the other hand, mathematical models of contact have been studied, for instance, in [25, 30, 36, 39], and the related results on history‐dependent hemivariational inequalities can be found in [12, 13, 15, 23, 26, 27, 38, 40].…”