| Previous Work |
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| § | Previous
efforts at building decision support |
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| systems |
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| l | Reutebuch
(1988) ROUTES |
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| l | Shenglin
(1990) Cost-benefit ratio |
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| l | Liu
and Sessions (1993) Minimizing construction, |
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| transport,
and maintenance costs |
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| l | Epstein
(1999) PLANEX |
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| § | None
of these considered landslide-prone terrain |
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