1. Determination of the oxidation number of plutonium(VI);Connick,1949
2. The penta-positive oxidation state of plutonium;Connick,1949
3. The tri-positive oxidation state of plutonium;Connick,1949
4. The first isolation of plutonium;Cunningham;J. Am. Chem. Soc.,1949
5. Possible production of elements of atomic number higher than 92;Fermi;Nat.,1934