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Agriculture, Ecosystems and Environment > 1996 > 60 > 1 > 17-28
Aquaculture > 1996 > 143 > 3-4 > 245-255
International Journal of Production Economics > 1995 > 42 > 1 > 51-66
Computers and Mathematics with Applications > 1995 > 30 > 8 > 29-32