... CorporationBoundary Value ProblemsVolume 2008, Article ID 236386, 9 pagesdoi:10.1155/2008/236386Research Article Nonlinear Systems of Second-Order ODEs Patricio Cerda and Pedro UbillaDepartamento de Matem´atica ... “Superlinear systems of second-order ODE’s,” to appear in Nonlinear Analysis: Theory, Methods ’ Applications.2 M. Conti, L. Merizzi, and S. Terracini, “On the existence of many solutions for a class of ... superlinearelliptic systems, ” Journal of Differential Equations, vol. 167, no. 2, pp. 357–387, 2000.3 D. R. Dunninger and H. Wang, “Existence and multiplicity of positive solutions for elliptic systems, ”Nonlinear...