By van der Zaag P.   Seyam I.M.   Savenije H.H.G.   in Water Policy

ISSN:1366-7017|4|1|19-32

Elsevier‎(2002)‎

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By van der Zaag P.J.   Lefeuvre   in Vacuum

ISSN:0042-207X|60|1|241-245

Elsevier‎(2001)‎

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By van der Zaag P.J.   Ruigrok J.J.M.   Gillies M.F.   in Philips Journal of Research

ISSN:0165-5817|51|1|173-195

Elsevier‎(1998)‎

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