Coincidence and fixed point theorem for hybrid contractions
The main result is a coincidence and fixed point theorem for two multi-valued and two single-valued maps on a metric space improving related results from [the reviewer, \textit{K. S. Ha} and \textit{Y. J. Cho}, Int. J. Math. Math. Sci. 12, No. 2, 247-256 (1989; Zbl 0669.54024)] and elsewhere.
scientific article; zbMATH DE number 1239905