| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 2.05 | AA |
1988.01 | Personal communication, BMG, Philippines | | | | E.M.Macalalad |
| <1.85 | INAA |
1989.03 | Personal communication, Musashi Institute of Technology, Japan | | | | S.Hirai and S.Suzuki |
| 1.86 | ICPMS |
1993.04 | Simultaneous determination of thirty-seven trace elements in twenty-eight international rock standards by ICP-MS | Geost. Newsletter | 17 | 81-97 | CD.Garbe-Schonberg |
| <5 | AA |
1994 | Personal Communication, Czech Geol. surv, Czech Republic | | | | I.Rubeska |
| 2.65 | ICPMS |
1995 | Personal communication,Toho Univ.,Japan | | | | N. Takamatsu |
| 1.75 | AA |
1996 | Determination of molybdenum in fifty three geochemical reference materials by flameless atomic absorption spectrometry | Geostamdards Newsletter | 21 | 93-96 | S.Terashima |
| 1.6 | AA |
1997 | Personal Communication,SKK,Japan | | | | |
| 2.6 | NM |
1999 | Quantiative evaluation of interference of nuclear reaction in INAA and PAA and their application for simultaneous analaysis of rocks and plant samples | Doctor Thesis,Kanazawa Univ.Japan | | 1-220 | Y. Miyamoto |
| 2 | OES |
1999 | Personarl Communication, Institute of Geology, Estonia | | | | T. Kiipli |
| <2 | EXRF |
2002 | Personal Communication, Southern Connecticut State Univ., USA | | | | T. Fleming |