Citation: Gm. Lieberman, Regularity of solutions of obstacle problems for elliptic equations with oblique boundary conditions, PAC J MATH, 201(2), 2001, pp. 389-419
Citation: S. Canic et al., A proof of existence of perturbed steady transonic shocks via a free boundary problem, COM PA MATH, 53(4), 2000, pp. 484-511