2004
Silins, U., Lieffers, V.J., Reid, D.
EFM Research Note 02/2004
Reid, D., Silins, U., Lieffers, V.J.
EFM Research Note 03/2004
2006
Silins, U., Lieffers, V.J., Reid, D.E.B.
EFM Research Note 12/2006
Silins, Uldis, Lieffers, V.J., Reid, D.E.B.
EFM Research Nore 06/2006