| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| <0.1 | VOLU |
1987.11 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy, R.Sumner, J.Hegarty, P.Smith and P.Fu |
| <0.01 | VOLU |
1987.09 | Personal communication, Japan Chem. Anal. Center | | | | S.Suzuki and H.Fukushima |
| 0.12 | VOLU |
1991.09 | Major and trace elemental abundances of the GSJ sedimentary rock reference samples | J.Japan Assoc.Min. Pet.Econ.Geol | 86 | 432-437 | K.Ishikawa,T.Yoshida and |
| <0.01 | VOLU |
1992 | Personal Communication,Dowa Engineering Co., Ltd.(Anal.Iijima Bunseki Center) | | | | Y.Kinryu |
| <0.030 | CHEM |
1994 | Personal Communication, Czech Geol. surv, Czech Republic | | | | I.Rubeska |
| 0.06 | TITR |
1996 | Personal communication, Institut fur Geowissenschaften,Germany | | | | Frau N.Groschopf |