Xj. Wang et Yb. Deng, EXISTENCE OF MULTIPLE SOLUTIONS TO NONLINEAR ELLIPTIC-EQUATIONS OF NONDIVERGENCE FORM, Journal of mathematical analysis and applications, 189(3), 1995, pp. 617-630
In this paper, by means of a priori estimates and topological degree t
heory, we prove the existence of two or more solutions to nonlinear el
liptic equations of nondivergence form. (C) 1995 Academic Press, Inc.