| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 0.018 | AA |
1987.12 | Personal communication, Vernadsky Inst. Geoch. Anal. Chem.,USSR | | | | B.F.Myasoedov |
| 0.0060 | INAA |
1989.03 | Personal communication, Musashi Institute of Technology, Japan | | | | S.Hirai and S.Suzuki |
| 0.0030 | AA |
1989.08 | Problems of sample decomposition method for the determination of aluminium, iron, sodium, potassium and barium in rock standard samples, (in Japanese with English abstract) | Bunseki Kagaku | 38 | 113-118 | S.Aizawa and H.Akaiwa |
| 59 | AA |
1999 | Personal communication,Universite Paris 6,France | | | | G.Richebois |