... theorems generalizing fixed point theorems for multivalued mappings,” in Fixed Point Theory and Applications,M.A.Th´era and J. B. Baillon, Eds., vol. 252 of Pitman Research Notes in Mathematics ... by using Bianchini-Grandolfi gaugefunctions.1. Introduction and PreliminariesKada et al. introduced in 1 the concept of w-distance on a metric space and extended theCaristi-Kirk fixed point ... generalizing in this way, among others, the mainresults of 1 because every w-distance is, in fact, a Q-function. This interesting approach hasbeen continued by Hussain et al. 6, and by Latif and...