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https://www.gasworld.com/helium-reserves-or-resources/2019757.article
https://www.gasworld.com/dme-says-it-has-found-significant-helium-percentages-in-arizona/2019758.article
http://www.sci-news.com/physics/interacting-time-crystals-08756.html
https://www.materialstoday.com/crystalline-materials/news/time-crystals-interact-within-superfluid-helium/
https://www.sciencedirect.com/science/article/abs/pii/S0301010420303992?dgcid=rss_sd_all
https://www.sciencedirect.com/science/article/abs/pii/S0925838820331248
https://www.sciencedirect.com/science/article/abs/pii/0022311582902902
https://www.vedantu.com/chemistry/helium
https://www.peakscientific.com/discover/news/he-vs-h-2/
https://pubs.asahq.org/anesthesiology/article/112/6/1503/10306/Cellular-Effects-of-Helium-in-Different-Organs