with W.F. Pfeffer, The Gauss-Green theorem and removable sets for the 2nd order PDE's in divergence form, Adv. Math., 183(1), 2004. 155-182.



Applying a very general Gauss-Green theorem established for the generalized Riemann integral, we obtain simple proofs of new results about removable sets of singularities for the Laplace and minimal surface equations. We consider singularities with respect to both differentiability and continuity.