“…He presented a modified version of the Banach contraction principle, more suitable in this context, see also [3,6]. In fact, the partial metric spaces constitute a suitable framework to model several distinguished examples of the theory of computation and also to model metric spaces via domain theory, see [4,5,7,10,11,12,13,16,21,22]. In this direction, Aydi et al [9] introduced the concept of a partial Hausdorff metric and extended Nadler's fixed point theorem in the setting of partial metric spaces.…”