| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 19.5 | FLUOR |
1990.01 | Personal communication, Konan University, Japan | | | | Y.Tamari |
| 18 | UU |
1990.05 | Personal Communication, U.S. Geological Survey, Lakewood | | | | J.S.Kane, J.G.Crock, R.M.O'Leary, K.R.Kennedy and |
| 2 | INAA |
1992.1 | Personal Commuication,Research Reactor Inst., Kyoto University, Japan | | | | T.Takeuchi |
| 19 | NAA |
1990 | Personal Communication, Los Aramos, USA | | | | E.S.Gladney |
| 17.0 | NAA |
1998 | Personal communication,Lucas Heights Science and Technology center ,Australia | | | | H.Waldron |