K. O. Friedrichs has written:

'Nonlinear wave motion'

'Appendix to remarks on the Mach effect'

'Spectral representations of linear operators' -- subject(s): Calculus, Differential equations

'Remarks on the Mach effect'

'Remarks on the reflection of conical shocks'

No.

Reflect.....defect,deflect, prefect,effect

Where human mind increases contrast between two surfaces with different luminescence

Make your reflection on preparing future teachers' skills and competencies out of the cause and effect and exit poll results.