Summary
The Robin problem for a nonlinear, second-order, elliptic equation is approximated by a primal hybrid method. Optimal order error estimates are established in various norms, with minimal regularity requirements in almost all cases.
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Milner, F.A. A primal hybrid finite element method for quasilinear second order elliptic problems. Numer. Math. 47, 107–122 (1985). https://doi.org/10.1007/BF01389879
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DOI: https://doi.org/10.1007/BF01389879