ununpentium
2004 / Les éléments 115 et 113 / Jean Sala Pala / Bulletin de l'Union des Physiciens 863 (2004) p. 519 [lien]
2004 / [Search and Discovery] Dubna-Livermore Collaboration Forms Two New Superheavy Elements / Charles Day / Physics Today 57 (2004) p. 22 [doi]