| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|
| 6.0 | ICPES |
1990.02 | Personal communication, Geological Survey of Canada | | | | D.C.Gregoire |
| 3.7 | ICPES |
1990.04 | Personal communication, Geological Survey of India | | | | B.G.Rao |
| 5 | XRF |
1990.04 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy, J.Hegarty, P.Smith, R.Sumner, S.Mckeo |
| 5.29 | ICPMS |
1994 | Personal Communication,WSU GeoAnalytical Laboratory, USA | | | | C. Knaack, S. Cornelius and P. Hooper |
| 5.29 | ICPMS |
2000 | Personarl Communication,Washington State University | | | | D. Johnson |