Lipschitz estimates for systems with ellipticity conditions at infinity

In the general vector-valued case N >= 1, we prove the Lipschitz continuity of local minimizers to some integrals of the calculus of variations of the form integral(Omega) g(x, vertical bar Du vertical bar) dx, with p, q-growth conditions only for vertical bar Du vertical bar -> +infinity and without further structure conditions on the integrand g = g( x, vertical bar Du vertical bar). We apply the regularity results to weak solutions to nonlinear elliptic systems of the form Sigma(n)(i=1) partial derivative/partial derivative x(i) a(i)(alpha) (x, Du) = 0, alpha = 1, 2, . . . , N.