https://www.gasworld.com/2019-in-review-renergen/2018135.article
https://www.wfuv.org/content/what-global-helium-shortage-means-macys-thanksgiving-day-parade
https://news.thomasnet.com/companystory/asg-superconductors-usa-the-evolution-of-helium-free-mropen-mri-system-at-rsna-2019-40031915
https://www.laserfocusworld.com/lasers-sources/article/14073257/bubbles-of-positronium-in-liquid-helium-could-make-a-gammaray-laser-possible
https://www.chemeurope.com/en/news/1163977/new-primary-method-for-the-measurement-of-pressure-based-on-electrical-measurements-carried-out-on-helium-gas.html