On normal families of meromorphic functions

In this paper, we consider some normality criterion concerning shared values. Let F be a family of meromorphic functions defined in a domain D. Let k,n⩾k+2 be positive integers and a≠0 be a finite complex number. If (fn)(k) and (gn)(k) share a in D for every pair of functions f,g∈F, then F is normal in D.