| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 1.39 | GRAV |
1993.06 | Personal Communication, University of Innsbruck, Austria | | | | R.Tessadri |
| 1.48 | GRAV |
1994 | Personal Communication, The Open University, UK | | | | P.J.Potts |
| 1.38 | ICPES |
1994 | Personal communication, Universite de Bretagne Occidentale, France | | | | Jo Cotten |
| 1.62 | GRAV |
1994 | Personal Communcation, Anglia Polytecbnic Univ. , UK | | | | T.Emmett |
| 1.98 | UU |
1994 | Personal communication,Lund Univ., Sweeden | | | | Zoltan Solyom |
| 1.06 | GRAV |
1995 | Personal communication,Claude Bernard Lyon1 Univ., France | | | | P.Capiez |
| 1.24 | GRAV |
1996 | Personal communication, Bremen Univ., Germany | | | | M.Zuther |
| 1.23 | GRAV |
1996 | Personal communication, Bremen Univ., Germany | | | | M.Zuther |
| 1.33 | GRAV |
1996 | Personal communication, Institut fur Geowissenschaften,Germany | | | | Frau N.Groschopf |
| 1.45 | GRAV |
1998 | Personal communication,GEOMAR,Germany | | | | K.Wolf |
| 1.39 | XRF |
1998 | Personal communcation,Universite de Liege,Belgium | | | | I.Roelandts |
| 1.13 | XRF |
1999 | Personal communication,Institute of Geology Estonia,ESTONIA | | | | T.Kiipli |