“…The concept of iterated function systems, IFS, to construct fractals was introduced by Hutchinson [12] in the decade 1980-1990, and later popularized by Barnsley [3]. Due to the applications of the fractals in many applied sciences (see, for instance, [7,8,14,29,36] and references therein), the IFS have been widely studied; see [2,6,11,13,15,[17][18][19][20]28,[30][31][32][33][34].…”