1 gram 99,95% Erbium metal element 68 Er sample in labeled glass vial | eBay
https://www.ebay.com.au/itm/1-gram-99-95-Erbium-metal-element-68-Er-sample-in-labeled-glass-vial-/231875242382Experimental Observations of Nuclear Activity in Deuterated Materials Subjected to a Low-Energy Photon Beam
https://arxiv.org/pdf/1704.00694.pdf