E. Titt

On Certain Special Solutions of the \Phi-Equation of Statistical Hydrodynamics

E. Hopf, E. Titt, 1953 .

Systems of Partial Differential Equations and Their Characteristic Surfaces

E. Titt, T. Y. Thomas, 1933 .

An Initial Value Problem for all Hyperbolic Partial Differential Equations of Second Order with Three Independent Variables

E. Titt, 1939 .