New Element, Lawrencium, Atomic Number 103 Ghiorso, Albert ; Sikkeland, Torbjørn ; Larsh, Almon E. ; Latimer, Robert M. Abstract Publication: Physical Review Letters Pub Date: May 1961 DOI: 10.1103/PhysRevLett.6.473 Bibcode: 1961PhRvL...6..473G