| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 35 | CEA |
1988.1 | Determination of total carbon and sulfur in fifty-two geochemical reference samples by combustion and infrared absorption spectrometry | Geost. Newsletter | 12 | 249-252 | S.Terashima |
| 140 | CEA |
1996 | Personal communication, Institut fur Geowissenschaften,Germany | | | | Frau N.Groschopf |
| 300 | CHEM |
2000 | Personal Communication, Geo-Science Laboratory Inc, Japan | | | | Kato |
| 300 | CHEM |
2000 | Personal Communication, Geo-Science Laboratory Inc, Japan | | | | Kato |