| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|
| 1.8 | OES |
1988.02 | Personal communication, USSR Academy of Sciences Siberian Branch | | | | V.P.Afonin |
| 2.4 | COLOR |
1988.09 | Spectrophotometric determination of germanium in rocks after selective adsorption on sephadex gel | Anal. Chim. Acta | 209 | 333-338 | A.Harada, T.Tarutani and K.Yoshimura |
| 1.80 | OES |
1989.1 | Determination of trace abundances of Ag, B, Ge, Mo, Sn, Tl and W in geochemical reference samples by atomic emission spectrography | Geost. Newsletter | 13 | 269-272 | A.I.Kuznetsova and N.L.Chumakova |
| 0.89 | ICPMS |
1992 | Determination of trace and ultra-trace elements in 32 international geostandards by ICP-MS | Jour.Min.Pet.Econ.Geol | 87 | 107-122 | T.Yoshida,S.Yamasaki and A.Tsumura |
| 2.5 | ICPMS |
1994 | Personal Communication, Torei Research Center, Japan | | | | M.Tanaka |
| 5.20 | ICPMS |
1995 | Personal communication,Toho Univ.,Japan | | | | N. Takamatsu |