| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 20 | OES |
1990.04 | Personal communication, Geological Survey of India | | | | B.G.Rao |
| 16 | XRF |
1990.04 | Personal communication, Govern. Chem. Lab., Brisbane, Australia | | | | H.A.Olszowy, J.Hegarty, P.Smith, R.Sumner, S.Mckeo |
| 16 | OES |
1990.05 | Personal Communication, U.S. Geological Survey, Lakewood | | | | J.S.Kane, J.G.Crock, P.H.Briggs and D.L.Fey |
| 16.8 | 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 |
| <30 | NAA |
1990 | Personal Communication, Los Aramos, USA | | | | E.S.Gladney |
| 31.2 | ICPMS |
1995 | Personal communication,Toho Univ.,Japan | | | | N. Takamatsu |
| 18 | XRF |
1999 | Personal communication,Institute of Geology,Estonia | | | | T.Kiipli |
| 16 | XRF |
2000 | Personal Communication, Geo-Science Laboratory Inc, Japan | | | | Kato |
| 16 | XRF |
1994 | Personal Communication,WSU GeoAnalytical Laboratory, USA | | | | C. Knaack, S. Cornelius and P. Hooper |
| 16 | XRF |
2000 | Personarl Communication,Washington State University | | | | D. Johnson |
| 21 | OES |
1999 | Personarl Communication, Institute of Geology, Estonia | | | | T. Kiipli |
| 17 | XRF |
1995 | Major and trace element analyses of rock samples by X-ray fluorescence spectrometry using Rh anode tube | Department of Geology, Faculty of Educaton, Iwate University and Institute of Mineralogy, Petrology, and Economic Geology, Tokoku University | 55 | 89-110 | N. Tsuchiya, T. Hasenaka |