Non-linear elliptic equations in conformal geometry by Chang, Sun-Yung A. 1948-

Nonlinear parabolic equations and hyperbolic-parabolic coupled systems by Zheng, Songmu

Lectures on analytic differential equations by Ilyashenko, Yu. S.

Proceedings of the Fifth International Conference on Hyperbolic problems :

Basic methods of soliton theory by Cherednik, Ivan

Nonlinear elliptic and parabolic equations of the second order by Krylov, N. V. (Nikolai Vladimirovich)

Nonlinear elliptic equations of the second order by Han, Qing 1964-

Δυναμικά συστήματα και εφαρμογές σε δυναμικά οικονομικά μοντέλα : by Λιαπής, Βασίλειος

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Hyperbolic problems :

Soliton equations and their algebro-geometric solutions by Gesztesy, Fritz, 1953-

Differential equations and dynamical systems by Perko, Lawrence

Asymptotic analysis of soliton problems : by Schuur, Peter Cornelis 1950-

Nonlinear integrable equations : by Konopelchenko, Boris Georgievich 1948-

Nonlinear hyperbolic problems :

Nonlinear ordinary differential equations by Jordan, D. W. (Dominic William)

Nonlinear differential equations and dynamical systems by Verhulst, Ferdinand 1939-

Nonlinear hyperbolic problems :

Variational methods : by Struwe, Michael 1955-

Monotone iterative techniques for discontinuous non-linear differential equations by Heikkila, Seppo

Periodic solutions of nonlinear dynamical systems : by Reithmeier, Eduard 1957-