Non-stationary scattering theory and parametric resonance in ultracold Rydberg plasmas subjected to a perturbation by a terahertz acoustic waveVyacheslav M. RylyukEur. Phys. J. D, 75 5 (2021) 163DOI: https://doi.org/10.1140/epjd/s10053-021-00152-1