1. The Einstein evolution equations as a first-order quasi-linear symmetric hyperbolic system, I
2. The Cauchy problem for quasi-linear symmetric hyperbolic systems
3. Quasi-linear equations of evolution with applications to partial differential equations, Springer Lecture Notes in Math. #448, Special Theory and Diff. Equations, W. N. Everitt, Ed., 1975.
4. The Mathematical Theory of Viscous Incompressible Flow, 2nd ed., Gordon & Breach, New York, 1969.