  A pointwise bound for local weak solutions to the p-Laplace system is
established in terms of data on the right-hand side in divergence form. The
relevant bound involves a Havin-Maz'ya- Wulff potential of the datum, and is a
counterpart for data in divergence form of a classical result of [KiMa], that
has recently been extended to systems in [KuMi2]. A local bound for
oscillations is also provided. These results allow for a unified approach to
regularity estimates for broad classes of norms, including Banach function
norms (e.g. Lebesgue, Lorentz and Orlicz norms), and norms depending on the
oscillation of functions (e.g. Holder, BMO and, more generally, Campanato type
norms). In particular, new regularity properties are exhibited, and well-known
results are easily recovered.
