| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|
| <20 | OES |
1990.04 | Personal communication, Geological Survey of India | | | | B.G.Rao |
| <10 | OES |
1990.05 | Personal Communication, U.S. Geological Survey, Lakewood | | | | J.S.Kane, J.G.Crock, P.H.Briggs and D.L.Fey |
| 0.35 | ICPMS |
1993.04 | Simultaneous determination of thirty-seven trace elements in twenty-eight international rock standards by ICP-MS | Geost. Newsletter | 17 | 81-97 | CD.Garbe-Schonberg |
| 0.25 | AA |
1994 | Personal Communication, Czech Geol. surv, Czech Republic | | | | I.Rubeska |
| 1 | XRF |
1996 | Personal communication, Bremen Univ., Germany | | | | M.Zuther |
| 0.8 | AA |
1997 | Personal Communication,SKK,Japan | | | | |
| 0.36 | HAA |
1998 | Personal communication,GSJ,Japan | | | | S.Terashima |
| 1 | OES |
1999 | Personarl Communication, Institute of Geology, Estonia | | | | T. Kiipli |
| 0.366 | HAA |
2002 | Determination of bismuth in 50 geological reference materials by AAS | BUNSEKI KAGAKU | 51 | 317-322 | S.Terashima, T.Okai, N.Imai |