- https://www.omicsonline.org/open-access/the-effects-of-528-hz-sound-wave-to-reduce-cell-death-in-human-astrocyteprimary-cell-culture-treated-with-ethanol-2155-6105-1000335.php?aid=91771
- https://pubmed.ncbi.nlm.nih.gov/30414050/
- https://www.scirp.org/journal/paperinformation?paperid=87146