 On April 24, 2008, a group led by Amnon Marinov at the Hebrew University of Jerusalem claimed to have found single atoms of unbibium-292 in naturally occurring thorium deposits at an abundance of between 10−11 and 10−12 relative to thorium.The claim of Marinov et al.was criticized by a part of the scientific community, and Marinov says he has submitted the article to the journals "Nature" and "Nature Physics" but both turned it down without sending it for peer review.