Chemists create and capture einsteinium, the elusive 99th element | Live Science
https://www.livescience.com/einsteinium-experiments-uncover-chemical-properties.htmlEinsteinium Is Mysterious. Scientists Have Unlocked Some of Its Secrets. - The New York Times
https://www.nytimes.com/2021/02/07/science/einsteinium-chemistry-elements.htmlFirst-Ever Measurements of Mysterious Element 'Einsteinium' Reveals Unexpected Properties
https://sciencemint.com/first-ever-measurements-of-mysterious-element-einsteinium-reveals-unexpected-properties/