Exceptional scatteredness in prime degree

Let q be an odd prime power and n integer. ??Fqn[x] a q-linearized t-scattered polynomial of linearized degree r. d=max?{t,r} number. In this paper we show that under these assumptions it follows ?=x. Our technique involves Galois theoretical characterization polynomials combined with the classification transitive subgroups general linear group over finite field Fq.