| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| <50 | ICPES |
1992.06 | Personal Communication, Geol.Survey of Japan(Anal.Chemex) | | | | H.Hirano,M.Kamitani, |
| 21 | ICPES |
1994 | Personal communication, Universite de Bretagne Occidentale, France | | | | Jo Cotten |
| 14.07 | ICPMS |
1994 | Personal communication, National Geophysical Research Institute | | | | V.Balaram |
| 22.074 | ICPMS |
1998 | Personal communication,M.Watanabe,MKK,Tokyo, Japan | | | | M.Watanabe |
| 21.49 | ICPMS |
1998 | Personal communcation,Universite de Liege,Belgium | | | | I.Roelandts |
| 20.96 | ICPMS |
1994 | Personal Communication,WSU GeoAnalytical Laboratory, USA | | | | C. Knaack, S. Cornelius and P. Hooper |
| 20.96 | ICPMS |
2000 | Personarl Communication,Washington State University | | | | D. Johnson |
| 20 | OES |
1999 | Personarl Communication, Institute of Geology, Estonia | | | | T. Kiipli |
| 11.8 | ICPMS |
2000 | Personarl Communication, Tohoku Univ. | | | | T. Ohba, T. Sugihara, T. Horie, S. Kawate |
| 21.7 | ICPMS |
2001 | Reference Materials for Geochmical Studies: New Analytical Data by ICP-MS and Critical Discussion of Reference Values | Geostandards Newsletter | 25 | 87-125 | P. Dulski |