| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|---|---|---|---|---|---|---|
| 0.51299 | IDMS | 1986.09 | Personal communication, Geological Survey of Japan | T.Tanaka | |||
| 0.513042 | IDMS | 1997 | Sequential separation of light rare-earth elements,thorium and uranium by miniaturized extrection chromatography:Application to isotopic analyses of silicate rocks | Analytica Chimica Acta | 339 | 79-89 | C.Pin and J.F.S.Zalduegui |