Comment on the determination of Fermi-liquid parameters from cyclotron-wave measurements using empirical procedures

The application of empirical procedures is shown to lead to a number of ambiguities or errors in the determination of cyclotron-wave dispersion curves. As a result of such ambiguities or errors, it is pointed out that the presently quoted values of the Fermi-liquid parameters {$A_i$}, $i\ge 2$, obtained from cyclotron-wave dispersion curves, can not be considered reliable.