On a mixed problem for a coupled nonlinear system. Clark, M.R.; Lima, O.A. — 1997 Electronic Journal of Differential Equations (EJDE) [electronic only]
On a parabolic strongly nonlinear problem on manifolds. Marinho, A.O.; Louredo, A.T.; Lima, O.A. — 2008 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]