| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 2.1 | AA |
1987.04 | Elemental concentrations in nine new Japanese rock reference samples | Geost. Newsletter | 11 | 75-77 | S.Terashima and A.Ando |
| 1.8 | AA |
1987.02 | Personal communication, Vernadsky Inst. Geoch. Anal. Chem.,USSR | | | | B.F.Myasoedov |
| 2.55 | AA |
1987.07 | Personal communication, ETH Inst. Krist. Krist. Petr.,Zurich, Switzerland | | | | B.Ayranci |
| 2 | AA |
1987.07 | Personal communication, BMG, Philippines | | | | E.M.Macalalad |
| 2.5 | ICPES |
1991.01 | Evaluation of ICP spectrometric measurements | Atomic Spectroscopy | 12 | 11- | V.Sixta |