Electronic Journal of Qualitative Differential Equations - Free research papers on differential equations. Electronic Journal of Differential Equations - Full text available in DVI, PDF, PS and TeX formats. Searchable index. Hilbert Space Methods for Partial Differential Equations - A group of free papers on partial differential equations. Ergodic Theory and Dynamical Systems - Ergodic Theory and Dynamical Systems is a journal which focuses on a variety of research areas. Nonlinear Differential Equations and Applications - Tables of contents from vol.4 (1997) on. Full text to subscribers. Journal of Hyperbolic Differential Equations - (World Scientific) Original research papers on nonlinear hyperbolic problems and related topics, of mathematical and/or physical interest. Forthcoming papers.