title: the invariants of modular indecomposable representations  of Z_{p^2}

authors: Mara D. Neusel and M\"ufit Sezer

abstract:
We consider the invariant ring for an indecomposable
representation of a cyclic group of order p^2over a field F of
characteristic p. We describe a set of F-algebra generators of this 
ring of invariants, and thus derive an upper bound for the largest
degree of an element in a minimal generating set for the ring of
invariants. This bound, as a polynomial in p, is of degree two.