By Laskari E.C.   Parsopoulos K.E.   Vrahatis M.N.   in Numerical Algorithms

ISSN:1017-1398|34|2-4|393-403

Springer Publishing Company ‎(2003)‎

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By Andreou A. S.   Parsopoulos K. E.   Vrahatis M. N.   Zombanakis G. A.   in Defence and Peace Economics

ISSN:1024-2694|15|5|481-495

Routledge Ltd‎(2004)‎

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