Linear partial dif ...
Lectures on nonlin ...
Boundary value pro ...
Hyperbolic problem ...
Hyperbolic partial ...
Fourth Internation ...
First Internationa ...
Third Internationa ...
Fifth Internationa ...
Proceedings of the ...
Partial differenti ...
Riemann waves and ...
Numerical methods ...
A very applied fir ...
Key to H. Shen's d ...
A beginner's guide ...
Cauchy problem for ...
Elliptic boundary ...