Investigation of Zero-Sound Dispersion Equation in the Complex Plane of Frequency

@inproceedings{Sadovnikova2005InvestigationOZ,
  title={Investigation of Zero-Sound Dispersion Equation in the Complex Plane of Frequency},
  author={V. Sadovnikova},
  year={2005}
}
The known solutions to the zero-sound dispersion equation are considered as placed on the physical and unphysical sheets in the complex plane of frequency. 
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